Answer:
"On 20 June 1789, the members of the French Third Estate took the Tennis Court Oath (French: Serment du Jeu de Paume), vowing "not to separate and to reassemble wherever require, until the Constitution of the kingdom is established".It was a pivotal event in the French Revolution."
I found this on google. But I hope this really helps.
There is so many reasons but they are complicated to explain
Fujiwara Family: Dynastic family that, by shrewd intermarriage and diplomacy, dominated the Japanese ... the Fujiwara rise to power was gradual, its founding in the 7th century foretold its future role and importance.
I believe you're looking for the Missouri Compromise.