It was a kind of social protest - people did not want to be discriminated because of their race or sex. This event was a precedence - nobody thought that something like this protest could occur at that time. Rosa Parks did something that made people think about tolerance and also made other people join her protest in different places.
To prevent the spread of communism to the south Vietnam
I believe it was Great Britain/ England.
The treaty gave some German territories to neighbouring countries and placed other German territories under international supervision. In addition, Germany was stripped of its overseas colonies, its military capabilities were severely restricted, and it was required to pay war reparations to the Allied countries.
I believe youe answer is C. The Triangle Shirtwaist Factory Fire