| A | B |
|---|
| Alliances | When two or more countries agree to come to each other’s aid if one of them is attacked. |
| Imperialism | Where one country takes over other countries so that it can use their resources to make itself richer and more powerful. |
| M.A.I.N. | An acronym used to remember the four background causes for World War I: Militarism, Alliances, Imperialism, and Nationalism. |
| Militarism | The belief that countries should maintain a strong military and that they should use that military to exert control or influence over other countries. |
| Nationalism | The belief that people from one country/nation are better than all other countries/nations. |
| Territorial | Having to do with land or lands. |
| Trench | A long hole dug in the ground to protect soldiers from enemy gunfire and bombs. |
| World War I (WWI) | Also known as the Great War and the War to end all Wars, it was the first war to involve dozens of different countries all over the world. |
| Colony | A country whose purpose is to provide resources to its parent country. |
| Resources | A general terms used to refer to materials used by countries, such as lumber, precious metals (e.g. gold), oil, etc. |
| Trade | Where one country buys and sells goods to one or more other countries. |
