Why was it important to register the african americans to vote 1965?

The Voting Rights Act, signed into law by President Lyndon Johnson (1908-73) on August 6, 1965, aimed to overcome legal barriers at the state and local levels that prevented African Americans from exercising their right to vote under the 15th Amendment (1870) to the Constitution of the United States. The act significantly widened the franchise and is considered among the most far-reaching pieces of civil rights legislation in U.S. history.