Your answers correct. It's true
The alliances system meant that a local conflict could easily result into an intimidating global one. The overall cause of World War was the assassination of Archduke Franz Ferdinand. Nationalism was a great cause of World War one because of countries being greedy and not negotiating.
Your welcome I don't know if that helped. But yea.
Cotton was the leading crop raised in south at the time of the civil war
I believe after the President is removed from office for any reason, The Vice President takes over. I hope this helps.
