By 1812 there were 11,000 of which Frenchman's looms in use in France alone?

By 1513, Leonardo da Vinci's patron was Giuliano, a member of which powerful Florentine family? By 1519, which ruler governed the Aztec Empire in central and southern Mexico? By 1665, the New Haven Colony had been absorbed by which colony? By 1795, which ruler had united most of his islands and founded a new kingdom? By 1825 Spain had lost all its American colonies except which two islands, lost in 1898? By 1845, the price of which animal pelts had plunged as silk replaced them in men's hats? Which New York jeweler, with partners John Young and J.L. Ellis, switched from selling paste jewels to real gems in the… By 1851, which American photographer's failing eyesight had begun to hamper his work?