The spanish were among one of the roughest and harshest empires ever in existance, they enslaved many people including the aztecs so i would say that they treated them harshly
There were multiple significant social movements after World War I including:
1) Harlem Renaissance- This movement revolved around the explosion of African-American music, art, writing, and culture. During this era, many African-American citizens lived in big cities (like Harlem) and used their talents in order to captivate American citizens. This was a small step towards improved relations between white and black citizens, as they found common interests in things like jazz music.
2) Women's Rights Movement- Women played a significant part in the war effort during World War I. This prompted many women to demand more rights, especially voting rights. This movement that started right after World War I resulted in the passing of the 19th amendment, which granted women the right to vote.
No, American manufacturers have been sourcing products and parts from around the world for decades, and today it is nearly impossible (and not to mention extremely expensive) for companies to attempt to extract themselves from the global supply chain.
In short, I believe Darwin's theory was controversial in the 1800s because it contradicted the biblical view of creation.
(Sorry for the shortness.)
xoxo