The Three Kingdoms period is a period in the long history of China.
The United States of America was founded in 1776. North America was originally inhabited by Indians. /kloc-at the end of 0/5, Spain, the Netherlands and other countries began to immigrate here, and Britain came from behind. 1773, Britain has established 13 colonies. 1775, the American people's war of independence against the British colonists broke out. 1776 On July 4th, the Second Continental Congress was held in Philadelphia, with George Washington as the commander-in-chief, and adopted the Declaration of Independence, officially announcing the establishment of the United States of America.
Japan, the full name of Japan, is located in the east of Asia and the northwest of the Pacific Ocean. The country name means "the country of sunrise". In the second half of the 2nd century, civil wars were frequent in small countries. It was not until the middle of the 3rd century that a huge "Yamato State" emerged. After a long period of expansion, it gradually conquered most parts of central Japan. Its leader was originally called "Wang" and later renamed as the emperor.
Therefore, during the China Three Kingdoms period, the United States was not yet established, Japan was still in the yayoi era, a country was not yet established, and it was in the civil war stage of a small country and did not form a real country.