The sun-centred model of the universe as proposed by Copernicus was not immediately accepted because it challenged the religious dogma that had held sway in the middle ages because this dogma required the earth to be at the center and man the creation of god as a unique event only on the earth so if helio centrism was to take hold it would relegate man and the earth to a lesser important aspect of the universe.
Koreans practiced a form of Buddism which is a Chinese philosophy. This occurred during the Tang dynasty.
The two sides in the American Revolution were the British Army and their colonial "loyalist" supporters as well as the American Revolutionary forces. They differed in that the British Army sought to prevent the American colonies from succeeding from their control and establishing an independent country. The American Colonial Forces wanted to break free from British rule and establish an independently ruled nation of their own.
The hexagonal means human shapes