How did Congress contribute to the extension of equal rights to marginalized groups in the 20th century?
A. By removing limitations on affirmative action programs at
universities
B. By passing laws to end political disenfranchisement of African
Americans
C. By granting noncitizens living in the United States equal protection
under the law
D. By providing legal aid to individuals filing civil rights lawsuits

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.

Explanation:

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals