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