Answer: This act was signed into law on August 6, 1965, by President Lyndon Johnson.
Explanation: It outlawed the discriminatory voting practices adopted in many southern states after the Civil War, including literacy tests as a prerequisite to voting
If the italicized word in the sentence is <em>who, </em>then the correct answer is that it is an <em />interrogative pronoun, which means that is asks a certain question.