How did congress contribute to the extension of equal rights to marginalized groups in the 20th century

Congress helped to pass several different laws that helped marginalize groups during the 20th century including:

1) The 19th amendment- The 19th amendment, passed in 1920, helped women gain the right to vote. This significantly helped women in American society, as it gave them a voice in the political process along with the ability to vote for individuals who would serve in their best interests.

2) The 24th amendment- This amendment outlawed the use of poll taxes as a means to stop people from voting. During the late 19th and early 20th century, poll taxes were used as a way to stop African-American men from voting in local, state, and national elections. Making this illegal allowed more African-American men to vote in elections.

industrial revolution, in modern history, the process of change from an agrarian and handicraft economy to one dominated by industry and machine manufacturing