American cities industrialized during the 1880s and infectious diseases appeared as a real threat. The immigration and the developement of large urban areas allowed diseases to spread quickly and infect larger populations. The immigrants lived in chea houses with inadequately hygiene, that made things worse.
Over 200 years. After the First Crusade (ending in 1099) the Crusades lasted off and on for over 200 years. All of the crusades were unsuccessful except for the first, but after the third (with Richard Lionheart) negotiations allowed unarmed Christians to enter the holy city.
Andrew Carnegie (1835–1919) was an American industrialist who amassed a fortune in the steel industry and a major philanthropist in the 19th Century. By 1899 he established and owned Carnegie Steel Corporation of New York and sold it in 1901 to banker John Pierpont Morgan for $480 million and fully dedicated his time towards the expansion of his philanthropic work, including the establishment of Carnegie-Mellon University in 1904. Andrews fortune has since supported everything from the discovery of insulin to the dismantling of nuclear weapons and towards the creation of Pell Grants and Sesame Street.
It depends on where but mainly yes because they enslaved people and the poor were very frowned upon.
