Writing Homework Help

I’m studying for my History class and don’t understand how to answer this. Can you help me study?

Assignment Description

In the period 1900 to 2001, people and states around the world adopted political ideologies such as communism, fascism, or nationalism to challenge the existing political and/or social order.

1. Pick one ideology from above (communism, fascism, or nationalism) and write How did one or more of these political ideologies challenged the existing political and/or social order.