Even though the revolutions did not succeed, the forces of liberalism and nationalism triumphed after 1850 because of the ideas of several individuals and artists such as Karl Marx and Gustave Flaubert. Another reason is that the people were made aware of the corrupt and deceitful actions of Napoleon III.<span />
Okay so
1. The new diseases
2. New weapons
3. Different animals
4. Different languages
5. and religion
I would say the new diseases that the white men brought over with them affected and changed the Native populations the most because many people died from these diseases because the Natives did not know how to prevent them or what to treat them with.
I would say that religion was the least change because even though some accepted the other religions, it really didn't affected the population.
Hope this helps you!
The answer is: The Great Depression
Hope this helps!