In 1814 and 1815, which island about six miles off Tuscany was a sovereign state ruled by Napoleon?

In 1789, which became the first U.S. holiday designated by presidential proclamation? In 1793, which Irish university college allowed Catholics to take degrees for the first time? In 1804, Justice Samuel Chase was impeached for comments critical of which president's administration? In 1805, U.S. Marines stormed the Barbary state of which city at Derna, helping end attacks on American ships? In 1852, which hero of Veracruz in the Mexican War was the Whig Party's presidential nominee? In 1862, the Union captured which Louisiana capital, prompting the Confederates to move the state capital to Opelousas? In 1865, which New York Tribune editor, who left school in his teens, urged young people to head to the frontier? In 1869, which Austrian monk published a paper on hawkweed, whose experiments didn't work as well as his ones with peas?