Investigating the reasons Slavery was canceled. In 1807, British Parliament abrogated the purchasing and offering of slaves. Shockingly, until 1833-when all parts of subjugation were abrogated you were still permitted to claim a slave. This sickened people in general thus they made a stop to bondage.
Martin Luther was primarily opposed to two major things.
The first was the sale of indulgences by the Catholic Church. This was a huge revenue stream wherein you could pay off your sins, no matter how large.
Next, Luther also believed that the Bible alone was the source of divine knowledge and that faith only saved, while the Catholic Church believed in a variety of divinely inspired texts and that faith + good works was the key to salvation.
Some famous female roles in the history of opera have only been possible because 19th-century composers started giving important roles to mezzo-sopranos.
By the Baroque period (1600-1750), opera had taken Europe by storm, a spectacular and expensive affair filled with ornate arias and elaborate sets with moving parts. One of the greatest composers of Italian baroque opera was George Friedrich Handel (1685-1759), a German who spent most of his life in London.
This period also saw the emergence of castrati, male singers who were castrated as boys to maintain their soprano voices. Those who survived to come out on top were the singing stars of the 17th and 18th centuries. Today these roles are sung by countertenors or women.
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John D. Rockefeller went into business when he was 20, and he picked up his first oil well as a sideline. He soon saw that that was the right horse to ride. Even before automobiles and airplanes laid their heavy claim on oil, it'd begun replacing coal in the power industries.
Andrew Carnegie makes the better hero. He, after all, was part and parcel of the emerging technologies that made our country. And his giving sprang from some deep-seated core of principle. Yet the Rockefeller clan assumed the mantle of public service. They've become political leaders and professional givers -- one died doing anthropological research in New Guinea.