After the White House, which president retired to his Lancaster estate, where he died a bachelor in 1868?

After the Sugarcubes broke up in 1992, which Icelandic lead singer went solo? After the U.S. government declined to buy which estate and tomb, a ladies' association bought it for $200,000 in 1858? After the Revolutionary War, Congress voted which Prussian a pension, and he became a U.S. citizen in 1783? After the War of 1812, which president asked Congress to declare war on Algiers? U.S. Senate elections are held every two years in even-numbered years. After 2000, in which year were they next held? Born in Annonay, France, in 1740 and 1745, which brothers sent the first people aloft in a hot-air balloon? After they invaded China and captured Beijing in 1644, which people established the Qing dynasty? After which 1906 disaster did Mayor Eugene Schmitz authorize the shooting of looters?