What law was finally passed in 1965 which abolished jim crow era voting laws?

The answer is Voting Rights Acts of 1965. It is a milestone of federal legislation in the United States that forbids racial discrimination in voting. It was marked into law by President Lyndon B. Johnson during the height of the Civil Rights Movement on August 6, 1965, and Congress later amended the Act five times to enlarge its protections. It is intended to implement the voting rights guaranteed by the Fourteenth and Fifteenth Amendments to the United States Constitution, the Act protected voting rights for racial minorities all through the country, especially in the South. According to the U.S. Department of Justice, the Act is well thought-out to be the most effective piece of civil rights legislation ever passed in the country.