Asap i used 18 ptsthe three main causes of imperialism were economic causes, political causes, and social/religious causes. choose all of the following that are political causes for imperialism. question 18 options: search for new materials educating people around the world spreading european culture around the world gaining ports to refuel and resupply naval ships build the largest empire in the world in order to be the most powerful country in the world spread christianity boost national pride

These would be political causes of imperialism:

Political causes have to do with a nation's pride and standing in the world, with its ability to project its power (such as with a navy) and exert control over other parts of the world.

"Searching for new materials" would be an economic cause.  The others in the list are all social or religious causes.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.