Answer:
oh I was not good in history
Now I'm not 100% sure here but C is your best bet
Frederick douglass provided audiences with a first hand account because he used to be a slave but he was freed
Congress played a significant role in expanding rights to marginalized Americans during the 20th century. Here are a few examples.
1) 19th amendment- This constitutional amendment gave women in the United States the right to vote.
2) Civil Rights Act 1964- This law ended segregation in public places. This included movie theaters, restaurants, parks, etc.
3) Voting Rights Act of 1965- This law got rid of poll taxes, grandfather clauses, and literacy tests. During the late 19th and early 20th century, all of these were used as a means to prevent African-American citizens from voting. Thanks to the Voting Rights Act of 1965, all of these types of obstacles to stop African-Americans from voting were now illegal.
After the war with Great Britain was held, America was given its independence from its once mother country, Great Britain.
