Period 6
"All right, class, take your seats," Uatu droned. "Now then, today, we will be learning of the Kree-Skrull War.
"The Skrulls were already an advanced, benevolent race ten million years ago when they first left galaxy, hoping to build an intergalactic federation based on trade. Once on the planet Hala, they encountered two other advanced civlizations, and – Yes, Ben, I should've known you'd have a question..."
"Not really, Sir," the Thing replied, lowering his hand. "It's just, um, this is World History, not Intergalactic History..."
There was a few moments silence as this information sunk in.
"I do not understand, Mr. Grimm," Uatu finally responded. "Anyway, the two races were the Kree, a humanoid peoples far beyond your lowly level of intelligence, and the Cotati, a race of sentient plants..."