President lyndon johnson was more successful than president kennedy in getting congress to pass civil rights and economic improvement bills because
b) southern states supported such programs
c) democrats had greater control of congress than during kennedy's presidency
d) the cuban missile crisis had shown congress that domestic peace was very important

The correct option is:

C) Democrats had greater control of Congress than during Kennedy's presidency.

In the 89th Congress (1965–1967), the House Democratic majority grew by 36 seats and Senate Democrats retained their two-thirds’ majority. This allowed Lyndon B. Johnson presidency to sign into law the Civil Rights Act (1964), launch significant social service programs, legislation protecting voting rights, promoting education, and helping the disadvantaged. President Johnson called this determined agenda “The Great Society.”

sorry i do not know this