What were the main causes of world war 1 check all that apply
nationalism
militarism
imperialism
pacifism
defeatism
alliances

Nationalism

Imperialism

Alliances

Militarism

Explanation:

The World War I seems to have been inevitable considering all factors that led to it. The nationalism was on the rise in Europe, so the differences between the people and their cultures were becoming a big problem. The imperialism was too a huge problem, as some countries had lot of colonies and benefited from them, while others didn't had colonies but wanted to get a piece of them. On top of these tensions, the two sides created alliances, which just heated up things even more. As the tensions were growing, the nations started to militarize rapidly and prepare for war. Once there was a situation that was going to lead to escalation of things everyone was prepared for war. That situation came with the assassination of Franz Ferdinand.

Nationalism

Imperialism

Alliances

Militarism

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27