Because factories was the first time a establishment had been made that allowed people to labor inside, instead of outside in the unpredictable weather. This fact plus many others opened doors to modern day labor or work employment, which changed history.
Statement first is true in this regard because the Spanish had a caste system that included free Africans and former slaves. Cristopher Columbus established the “first Spanish colony” in America, in what now is Haiti and The Dominic Republic.
Since the beginning, Spanish used slavery from Indigenous people in the Americas and they also brought black Africans. Spanish had “Castas”, the equivalent of racial and social hierarchies. Spanish considered slaves inferior beings.
It started in great britian because the cotton and trade industries allowed investors to support the construction of factories
Watergate scandal would be the main thing.
But if you want a second answer to this then the Arab oil embargo because of how much people were unable to get gas or go to work.