Describe what you feel is the

Most effective act of legislation passed during president Lyndon B. Johnson's term.

The most effective act of legislation passed during president Lyndon B. Johnson's term is the Civil Rights Act.

Explanation:

The Civil Rights Act was passed during Lyndon B. Johnson's administration in 1964. It effectively ended the lawful segregation of people in public places based on race, religion, sex, or national origin. The Civil Rights Act was the culmination of widespread activism throughout the United States but especially in the Southeastern United States where segregation was still widely practiced. It is significant that 93% of democrats from the former confederate states in the House voted against the Civil Rights Act. In the Senate, 95% the democrat Senate representatives from the former confederate states voted against the act. There was only one Republican representative in the House and one in the Senate from the former confederate states at the time and they both also voted against the Civil Rights Act. This shows how deeply ingrained discrimination and inequality were in this region at the time and it makes it more of a landmark and watershed that it passed.