Korea was required to provide regular tributes to china, while japan was required to provide tributes less frequently
Prophets (just typing this because it needs to be 20 characters long)
Two, one male and one female, in the hopes that they would sex it up and repopulate the earth.
Answer:
March 29 was chosen as National Vietnam War Veterans Day because on March 29, 1973, Military Assistance Command, Vietnam was disbanded and the last U.S. combat troops departed from the Republic of Vietnam.