Which of the following was not a major cause of european imperialism in the 1800s

The answer is population overcrowding in Europe.  The first reason is Europe was not overpopulated at that time.  In the 1800s, there were two things that kept the population down.  These were warfare and epidemics.  Therefore, population overcrowding was not a major cause of European imperialism in that century.

the answer should be arrogance & pride.

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast