There were four main causes of World War I. Militarism, alliances, imperialism and nationalism.<span> The first world war was a result of these four causes, but it was triggered by the assassination of the Austrian archduke Franz Ferdinand and his wife</span>
The Union won the war because:
1) There factories were built up; the South was mostly farms
2) They had the support of African slaves located in the South
3) They had larger armies
4) They had a more built up navy
5) They were able to deprive the South of their economy and allies
hope this helps
Answer:
federation
Explanation:
a group of states with a central government
