Nationalism. number 6 number 6
The correct answer is D.
Many of the European countries involved in the era of imperialism had a large standing army. Countries like Great Britain and France had been around for centuries and built a strong military. The other three are all important factors that lead to the increase of imperialism in the 1800's.
1. C, Federal courts have the power to veto laws
2. D, Legislative courts are the senate and the H.O.R.
3. C, Separation of power is self explanatory
C. A jobs program to get Americans working during the Great Depression