Answer: C, protect former slaves from discrimination in public accommodations such as hotels and theaters
Explanation: The Civil Rights act of 1875 guaranteed African Americans equal treatment in public transportation and public accommodations and service on juries.
Since you didn't list any following I'll make my own.
Napoleon affected Latin America by chasing Portugal's Prince Regent John to Brazil which then made Brazil the center of the Portuguese Empire. Napoleon then turned on Spain and captured their rulers creating a power vacuum in Latin American Spanish colonies and in Spain.
They contributed to World War 1 through the assassination of Archduke Franz Ferdinand. The Black Hand was part of a Pan-Slavist movement in which they wanted to unite territories of South Slave that had been annexed by Austria-Hungry. Hopefully this helps.
It was a significant development because it the first set of rules that anyone could see at any time so there was no excuse like oh whoops i didn't know! hope i helped