What can from an account of encounters between early explorers and Native American peoples?

Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians. Europeans were used to these diseases, but Indian people had no resistance to them.

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

north atlantic treaty organization.