Final answer:
The Voting Rights Act of 1965 had the greatest impact on the successful election of African Americans to the US House of Representatives during the civil rights era.
Step-by-step explanation:
The law passed during the civil rights era that likely had the greatest impact on the successful election of African Americans to the US House of Representatives is the Voting Rights Act of 1965. This landmark legislation aimed to overcome racial barriers to voting and addressed issues such as voter suppression and discrimination. It provided federal oversight of voting practices in states with a history of voting discrimination and allowed for the enforcement of voting rights.
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