Civil wars broke out
Tensions between the super powers caused tensions in other countries who relied on the super powers, for trade, and support, also for countries politically dies to these countries.
:) hope it helped
Generally speaking, advanced farming techniques allowed for a surplus of food, which led to the emergence of a "artisan" class--since for the first time people were "freed" to engage in other actives besides gathering food.
D. Opened an immigration station on Ellis Island in New York City.
Yes.
Although the constitution does not mention the issue of secession, The Supreme Court has consistently interpreted the Constitution to be an "indestructible" union. The states cannot leave the Union. There is no legal basis a state can point to for unilaterally seceding.
