HURRY PLEASE AND HELP ME What were the most important reasons why World War 1 began? Check all that apply.

Nationalist movements were on the rise.
Competition to colonize smaller countries rose.
Countries were engaging in militarism.
Countries were splitting into alliances.
Countries were developing position gas.
Smaller countries rose up to fight imperialism.

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.