I believe THE ANSWER IS A,D
Answer:
Increase in population and desire to search for land
The Chinese decided to enter the Korean War on November 25-26, 1950. This was an enormous shock to the American forces, as well as to the United Nations. The United States, and in particular U.S. Gen. Douglas MacArthur, believed that the Chinese would not openly enter the war. When China did provide support to North Korea, the effect was catastrophic on the American forces, leading to a great expansion of the conflict.
The two solstice’s happens around June 20th or 21st
The Equinox happens in March (about March 21st and September 23rd
Explanation; These are the days when the Sun is exactly above the Equator, which makes day and night of equal length.