Fatto generale: 200 is degrees in a human"s field of vision (approximately).
Fatto matematico: 200 is the smallest number which can not be made prime by changing one of its digits.
Trivia: 200 is the minimum number of varieties of watermelons grown in the U.S.
Data storica: July 18th is the day in 1857 that Louis Faidherbe, French governor of Senegal, arrives to relieve French forces at Kayes, effectively ending El Hajj Umar Tall's war against the French.