Answer:
The Chinese Revolution of 1949. ... The announcement ended the costly full-scale civil war between the Chinese Communist Party (CCP) and the Nationalist Party, or Kuomintang (KMT), which broke out immediately following World War II and had been preceded by on and off conflict between the two sides since the 1920's.
The correct answer is Rhapta. The area of Rhapta was historically famous for being a trading port for people of all nations and it was located in Southeast Africa. It was first described in the 1st century AD. There's even evidence that Romans traded there as well.
The answer is atomic number
I believe the answer is B