J. Hector St. Jean de Crevecoeur's "Letters from an American Farmer"

reformation

ref·​or·​ma·​tion ˌre-fər-ˈmā-shən 
Noun
1
: the act of reforming : the state of being reformed
2
capitalized : a 16th century religious movement marked ultimately by rejection or modification of some Roman Catholic doctrine and practice and establishment of the Protestant churches

Source