Answer:
Invasions by Barbarian tribes. The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.
Explanation:
I got you.
Advanced: Countries came a long way from the beginning of time
Answer:
I remember this case so I believe it was Suzy Snoozer.
Explanation:
The people who would most likely support imperialism here would be capitalists and the media. Capitalists because they can produce much higher amounts of goods for a much lower price - exploiting the local population, and the media because they have stories to talk about which sell :)
Separate but equal facilities between whites and blacks (not weren't really equal)