Countries building up armys to be strong and not starting a war and preparing for anything
nationalism
Alliance is when both countries agree to protect each other. For example,if the country you are protecting get into a fight or war you help your country win because you both agree for the same protection
Assassination of Archduke ferdidan
Sometimes called a empire but is ruled by nations or over ruled by other nations. However,Main defined as a extension or expansion and is probably used by military force control by nations authorityAnd mainly shows the expansion through out nations
Belief that your country is better than all the other country's.How ever, Many countries were greedy that it maid other countries release trust and put them self's first
The assassination of Archduke Ferdinand was a big trigger point to WWI due to that killing