D is the correct answer
Interestingly enough, the world did not see an increase in the number of hijackings after 9/11, which possibly could be credited to increased security measures.
I believe it is c but im not completely sure
Supreme Headquarters Allied Expeditionary Force (SHAEF; /ˈʃeɪf/ SHAYF) was the headquarters of the Commander of Allied forces in north west Europe, from late 1943 until the end of World War II. U.S. General Dwight D. Eisenhower was in command of SHAEF throughout its existence.
Had to look for the missing details and here is my answer.
The area that is generally considered by Ronald Reagan as the most positive legacy is the COLD WAR. The Cold War actually happened right after the World War II. What occurred during this time was that there was a tension between the powers of the West and the East. Ronald Reagan actually served as the 40th President of the United States and he was active during this event. Hope this helps.
They had successfully organized workers into unions.