The answer to your Question is A
Answer:
Imperialism was a cause because building an empire needs manpower such as an army and a navy to conquer and keep the land that they colonised. The alliances system meant that a local conflict could easily result into an intimidating global one. This leads to Imperialism.
Explanation:
Answer:
d) marginal propensity to consume
9x + 18 + 2x + 19 = 180
11x + 37 = 180
11x = 143
x = 13