Passage of the mccarran act was related to which of these?
a. vietnam war
b. marshall plan
c. truman doctrine
d. second red scare

The correct answer is D) Second Red Scare.

The McCarran Act was passed in 1950, a few years after the conclusion of World War II. At this time, the United States was going through the Second Red Scare. American citizens and the federal government feared the spread of communism on a domestic and international scale. To ensure that communist influences didn't infiltrate the American government or other institutions, the McCarran Act was passed. This made communist organizations register with the American government for surveillance purposes.

the second world war (wwii) was one of the major trans formative events of the 20th century, with 39 million deaths in europe alone. large amounts of physical capital were destroyed as well through six years of constant ground battles and bombing. many individuals were forced to abandon or give up their property without compensation and to move on to new lands. periods of hunger become more common even in relatively prosperous western europe. families were separated for long periods of time especially from their fathers. many including young children would personally witness the horrors of war as battles and bombing took place in the very areas where they lived. horrendous crimes against humanity were committed. due to wwii, political and economic systems in many countries would be permanently altered.

explanation: d