the war took place at the enter of europe, its front was located at the eastern front, the italian front, and the mediterranean front which makes its known as a global war. the 4 main causes of WW1 was militarism, alliances, imperalism, and nationalism.
militarism- it lead to an arms race among the major European powers in the years leading up to the WW1. many countries started to militarism to strengthen up their military. the arm and naval race led to WW1. France amd Germany were heavily involve in the arm race. Germany had 2 million solders which which is double the amount of solders France had.
alliances- Another reason of the war was the system of alliances that existed. then world war 1 began Europe divided between two seperated alliance systems. Britian, France, and Russia made up the Triple Entente while Germany. The assassination of Franz Ferdinand also created a major problem. immedaitily after the assassination, which was carried out by a serbian nationlist organization called the black hand.
imperalism- is the ideology of extrending a countrys rule over foreign nations,often by military force. many european countries mostly britian, france, and germany wanted to expand their empire and they claimed land that wasnt part of their empire which created tension.
nationalism led to some countries uniting and attacking other countries. Nationalism promoted the Expansion of Many european countries. also the assassination of Archduke Franz Ferdinand was another cause that led to WW1. the empires leaders blamed the attack on on the serbian goverment.