Main cause communism. The north did not want to adopt communism while the south did hence the reason for why the US got involved to make sure that the north would win so as to help stop the spread of communism (sorry i know this is kind of late)
Look at the root, the word isolation can be seen. What does isolation mean? To separate from everyone else. Which answer creates a separation from other countries? B by avoiding contact with other countries
Answer:
Enslaved labor
Explanation:
The cotton industry that nearly the entire South depended on was built entirely on slave labor.
"Austria-Hungary<span> declared war on </span>Serbia<span> after serbian nationalists assassinated Archduke Franz Ferdinand and his wife, this was not necessary as only a few serbians participated and these assassinations usually did not result in war" (prezi.com)</span>