In the beginning of the 1930's though the NAACP's legal Defence and education fund began to turn to the courts to try to make progress in over coming legally sanctioned discrimination from 1935 to 1938 the legal arm of the NAACP was headed by Charles Hamilton Houston
Tensions between the people’s republic of China ( PRC) and the republic of China (ROC) in the 1950s resulted in armed conflict over strategic islands in the Taiwan strait.
Answer:
In my opinion that were the geographical position and large number of great sailors and explorers.
Explanation:
Even in the first half of 15th Century Portugal started spreading its maritime strength, which was their main focus when it comes to development of the country. Of course, the position of the country, that is located on the shores of Atlantic Ocean allowed the sailors from this country to gain certain knowledge. Of course, with the technological improvements of that period they started sailing on the open sea. Of course, all of this wouldn't be possible without great sailors and explorers that opened the Age of Exploration. Among them the most famous were Dias, Vasco de Gama and Pedro Cabral.
Manifest destiny - The idea to spread “from sea to shining sea” ( east to west)
This also ties with imperialism
Hope this helps!