What were some contributing factors in the spread of domestic terrorism? check all that apply
-growth of ethnic nationalism throughout europe and the middle east
- colonial groups looking for independence from imperialistic powers
- spreading of communism and socialist ideas throughout the world
- poor or declining economy creating tension and domestic unrest
- lack of education for younger generations, continuing the terrorist cycle

-Growth of ethnic nationalism throughout Europe and Middle East

The idea of the need of a "pure race" or of races of usurpers in the countries were getting common.

-Colonial groups looking for independence from imperialistic powers

This alone was more than reason for many to attack others from their own country. The problem is that the line is always blurry when it comes to decide the targets of the attack and who are actually the supporters of the enemy that deserve to be attacked. In the end, many just decided that just being against the cause was enough to add someone to the casualties.

-Spreading of communism and socialist ideas throughout the world

This enough generated many problems with the war between classes and the very troubling ideas of non existence of private properties and many other things that led straight up to physical conflicts, abuse of power and so on.