In 1866, which city replaced Oudong as the capital of Cambodia?

Between 1801 and 1803, Matthew Flinders became the first person to sail all the way around which land? Between 1801 and 1917, every Russian czar was named either Nicholas or what? Between 1803 and 1848, who served as U.S. senator, secretary of state, president and congressman, in that order? Between 1811 and 1852, which Kentuckian served in the House and the Senate and as secretary of state? Between 1812 and 1815, Scottish and Irish settlers founded the Red River Settlement in which Canadian prairie province? Between 1816 and 1819, four new states joined the Union, including which "Hoosier" state? Between 1816 and 1830, who at various times ruled the lands of present-day Venezuela, Colombia and Peru? Which landmark did Japanese artist Hokusai depict in a famous series of 36 views?