Well he's a really good author who writes percy jackson series along w a lot of other types of mythology that I like, its cool lol
What got people to move to the west were the great plains were, is because of the gold rush. The president showed a giant crowd of people a jar of water, sand, and gold nuggets. He told them this is what they would find if they moved to the west. And of course everyone went searching for gold.
The correct answer here is the option C.
In order to keep the fragile balance of power in the period before the World War I, countries entered alliances with one another. So for example, France, Russia and the Great Britain were in one alliance and the Germans and Austrians in another. If one country entered a war the other were obliged to go to their aid. That is how the World War I escalated.
The period was called the middle ages (dark ages).