The u.s. reluctance to send americans to fight in foreign countries for fear of getting the u.s. involved in another vietnam is called
a. post-traumatic war disorder
b. containment
c. the domino theory
d. the vietnam syndrome

The U.S. reluctance to send Americans to fight in foreign countries for fear of getting the U.S. involved in another Vietnam is called "D. the Vietnam syndrome," since the Vietnam War was viewed by many as being a foreign policy disaster. 

The correct answer is D)They restricted the rights of African Americans.

Jim Crow laws were laws that were passed primarily in the Southern states within the US. These laws allowed for legal segregation of a variety of places. This included movie theaters, parks, restauraunts, and other public spaces (such as water fountains). These segregation laws caused a lot of tension in the South, as many African American citizens felt like second class citizens since they could not go to the same places as white citizens. These laws would exist in the South for over 50 years.