World War 1 did not resolve the disagreements that caused the war.
Militarism is belief or desire of a government or people that a country should maintain a strong military capability and be prepared to use it aggressively to defend or promote national interests. Where imperialism is a policy of extending a country's power and influence through diplomacy or military force. Nationalism is a Patriotic feeling, principles, or effort. A country feels superior to another country. Alliance is a formal agreement or treaty between two or more nations to cooperate for specific purposes. World War 1 did not resolve all these disagreements that started the war.
The causes of World War 1 began in Europe in July of 1914. The top main subjects of the war was Militarism, Alliances, Imperialism, and Nationalism. But the straw that broke the camel's back was the assassination of Archduke Franz Ferdinand by Gavrilo Princip. The crisis came after a long and difficult series of clashes between the Great Powers(Italy, France, Germany, the British Empire, the Austria-Hungarian Empire and Russia) over European and issues in the 10 years before 1914 that had left tensions high. In turn these clashes can be traced to changes in the power in Europe in 1867. The more immediate cause for the war was tensions over territory in the Balkans. Austria Hungary competed with Serbia and Russia for territory and influence in the region and they pulled the rest of the Great Powers into the conflict through all their different alliances and treaties. Although the chain of events came undone by the assassination of Archduke that triggered the war, the war's beginning go deeper, including national politics, cultures, economics, and a complex train of alliances. Some of the most important long term or organized causes are the spread of Nationalism across Europe, unresolved territories, an amazing system of alliances, they wanted to breakdown the balance of power in Europe.
Other causes that came into play during this crisis continued the war included misperceptions of doing ( the German belief that the United Kingdom would remain neutral) and delays and misunderstandings in government communications. The other categories of explanation for World War I has to do with different historians overall methods. Most historians think causes from more than one