What do the Montgomery bus boycott, the United Farm Workers strike, the American Indian Movement's occupation of Alcatraz Island, and the Asian
Americans for Equality demonstration against discrimination in the
construction industry have in common?

they helped win expanded civil rights for marginalized groups.

Explanation:

All the above situations or cases occurred when racial discrimination and segregation were highly rampant in the United States of America. It thereby depicts those series of civil movements and nonviolent protests in the course of fighting or seeking a better standard of living among African Americans, Asians, Latino,s and Native Americans.

Hence, in this case, the correct answer is "they helped win expanded civil rights for marginalized groups."

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings

the answer is 1.. i think