Declaimer: I do not own the Gundam series or any merchandise related to it, I am but a humble author trying to create a fun story for all to read and enjoy (and NOT plagiarize)

Author's notes: some information were corrected and written into context after a little research. And as a important note, there is NO Coordinators in this story. So that means that both people in space and on Earth have the same genetic makeup and no advantage is gained through gene modification. This will also significantly differ my story to the basic plot of Gundam Seed (Which I am trying to do instead of just ripping the plot from GS)since the core need, and reason for war is, fundamentally, altered.

And also, this story won't be centered around Gundam Seed alone, it will be a compilation of several Gundam series and characters from Rurouni Kenshin will make appearances, so you can call this a crossover. Anyways, all I can say is, read and enjoy!

Gundam world: The war of the Cosmic Era

Phase 1 Episode 1

The new weapon known as M.S

Through the glassless windows of a burned building, 3 giant robots were seen, trekking through the ruined and deserted streets of the city of Panama. The attack, by the Space Alliance on Panama, had last for three days and the Earth alliance's forces are finally on retreat.

Thousands of civilians were killed in the crossfireand more was to come. Now the Space Alliance is weeding out all remaining Earth Alliance forces in the area. The weapons that were used to carry out the attack and defense were these huge man-like contraptions called Mobile suits; these, more specifically, are called Zakus. The Zakus are the primary weapons used by the space alliance to carry out all forms of warfare. Soldiers that were trained for the task of using them piloted these. Covered in a thick, dark green armor and carrying huge beam weapons, their movements were slow but deliberate, each step kicking up a cloud of dust. The visor that glowed red in the helmet surveyed its surroundings suspiciously.

Suddenly, a series of thundering sound was heard. Huge bullets rushed towards the unsuspecting group of three Zakus and embedded themselves in the armor of the last robot. The victims turned around hastily and raised their rifle at the white robot that stood in the distance, their target: one remaining Earth alliance mobile suit. The white mobile suite was battered up; one of its arms and parts of its head was missing. It was supporting its semiautomatic gun with one arm that shook violently as the shocks of the weapon went back into it while the huge bullet shells fell at its feet like rain.

The Zakus separated swiftly and charged towards the lone figure with unexpected speed. One pulled out a handle of some sort from its waist and a bright light instantly burst out at the end of it, forming a sword like weapon of energy.

The Earth alliance mobile Suit took two steps back and its legs buckled as it fell to the ground with a loud thud that shook the surrounding buildings. Its arm rose up towards the sky as it released the last of its ammo. The next instant, the Zaku with the beam saber stood over the now immobile EAMS (Earth Alliance Mobile Suit) and plunged its blade into the chest of its victim. Huge electric sparks erupted from where the beam saber was embedded into the EAMS and the Zaku leaped away before the whole unit exploded violently.

Maybe if the explosion weren't so loud, the pilots of the Zakus would have heard the agonized scream of its pilot as his body was scorched and decimated. But now, The Zakus simply turned around and continued on their patrol. Their emotionless "eyes" took to surveying their surroundings once again like the machines that they are. But the emotions of their pilots will never be conveyed on the battlefield.

Oxoxoxoxoxoxoxoxoxox

In the 52-year of the cosmic era, men have taken to living in space on huge man made colonies due to over population and growing conflict on Earth. At first, Earth governments had strong control over the space colonies through economic partnership and agriculture. But as time began to wind on, the Earth began to use the Space colonies as an industrial warehouse for valuable minerals available only in space such as the hardest metal ever found, Gundanium.

Many workers and peasents who were struck by poverty on Earth began to flood to the Space Colonies looking for jobs; soon, the Space Colonies were overcrowded with millions of poor citizens from Earth.

The living conditions in the space colonies soon worsened. Serious pollution caused many deaths due to the Space colony's lack of natural air recycling organisms. People on Earth thought of Space colony dwellers as people who weren't wanted on the mother planet.

These issues gradually were resolved as the Space colonies formed a space alliance for trading and support between the colonies in space. And soon after, the separate colonies came together and were physically joined to form the heart of the space alliance called PLANT. And a few years later, the space alliance gained independence from Earth governments under the ZAFT, Zodiac Alliance Freedom Treaty. The ZAFT, although independent politically, still relied heavily on agriculture goods from the Earth, letting Earth have total diplomatic control still. A few years later, the newly elected chairmen of the PLANT, Siegel Clyne, dedicated 3 out of ten of the artificial residential planets to large agriculture development that would rid the tight grip of Earth over PLANT using food. The Earth providers and politicians saw this as a threat of total isolation of PLANT and began demanding certain colonies be handed over as transport sectors from Earth into space. These requests were refused by the ZAFT out of fear that the Earth will put blockades and monopolize the space resources industry.

By this time, growing tensions between Earth andPLANT had reached a pinnicle where small to medium scale conflict was almost inevitable. Some hardcore generals were already planning and strategizing a full scale invasion of PLANT. In the meanwhile, PLANT had began establishing a small scale, technologically advanced defensive force for itself.

After repeated refusal of the request, Earth launched a series of missile attacks on the artificial planet Junius seven, the PLANT's largest agriculture provider. The life supporting barriers on the colony was penetrated and many civilians died or were sucked out into space, rendering the planet inhabitable. ZAFT retaliated by launching bombing campaigns on key military missile sites on Earth, thus destroying most of the ability of the Earth to attack space and ensuring their own protection.

Earth Alliance saw this as a major threat of hostile take over by the ZAFT now that their means of defense were practically rendered useless; and so the Earth Alliance began constructing the Mass driver; a mechanism that is, in theory, able to deliver large amounts of material into space with low cost and much higher efficiency than the conventional rocket propulsion systems. This was Earth's means of delivering their space fleets and weapons into space.

The first mass driver was built in Panama and in operation. The ZAFT, wanting to contain these "incidents" as small-scale skirmishes and not escalated to total war, launched a land attack in Panama to destroy the mass driver.

ZAFT's weaponry superiority ensured the victory beginning, but the attack was so successful that the ZAFT not only conquered Panama, but also began to expand their territory on Earth. The Earth alliance was forced into a corner by the ZAFT's unstoppable expansion. The threat of the attack on the Atlantic federation was looming closer each day, and retaliation was futile against the ZAFT's mobile armors.

Earth, as a last resort, declared war on the ZAFT and launched a nuclear attack on Yakin Doe, the ZAFT headquarters based in space.

The attack was deflected, and ZAFT soon declared war on the Earth Alliance. PLANT was largely concerned as to the threat of the EA's nuclear weapons and the catastrophic destruction it would unleash if one were to hit PLANT. The Space alliance immediately began working on a solution.

A few months later, PLANT dropped thousands of N-Jammers (Nuclear Jammers to prevent all nuclear energy) into the Earth. These N-Jammers were designed to alleviate nuclear energy by suppressing the nuclear fission reaction through blocking the free movement of neutrons. These N-Jammers' effective range was so great that a handful of them were able to spread its effect throughout the whole world, it also destroyed the communications system such as radars with its strong interference. This sent most of the world into an energy crisis since most of the energy was derived from nuclear power. This new technology rendered the use of classical weapons, even in space, like long-range missiles, that rely heavily on radars, useless.

Soon after this, both Earth and ZAFT began to develop a new type of weapon that were used hundreds of years before for fighting competitions only. They developed and improved on the weapon known as Mobile suits. This new weapon allowed for great versatility on the new battlefield because it is usable for combat within sight (fighting what is in your range of sight instead of relying on radars), so it doesn't rely on the outdated radars, and it is a unilateral mechanism that can carry a variety of powerful weapons at once.

The hopes of ZAFT to limit the extent of the "Junius Seven Incident" were crushed as total war reared its ugly head when the first Mobile suits were used to take back Panama.

And so the war of the cosmic era began, with the use of a new weapon called mobile suits.

Author's notes: That was just a brief history to Gundam World which is similar to that of Gundam Seed, with changes that I have made to accommodate my story. And NO, this won't be a history lesson, this is going to be an epic romantic space battle story much like a combination of GUNDAM seed + destiny + G Gundam, and maybe even a crossover! So keep your eyes open! And if you liked the chapter, please leave a note so I know that you liked it!