Answer:
January 27, 1973 Nixion singed the paris peace treaty ending the US involvment with vietnam
January 27, 1973
Explanation: President Nixon signs the Paris Peace Accords, ending direct U.S. involvement in the Vietnam War
Emperor Mutsuhito - Meiji Restoration
Emperor Guang Xu - 100 Days of Reform
Tokugawa Shogun - Treaty of Kanagawa
examined natural laws governing the universe