An 1855 entry in which Scottish missionary's African journal mentions the discovery of Victoria Falls?

Which British cavalry force of about 660 men was decimated in an 1854 charge at Balaclava? An 1854 cholera outbreak in London ended after Dr. John Snow had the handle removed from what? An 1855 book subtitled "The Economical Relations of Slavery" was titled "___ Is King"? An 1855 earthquake raised the harbor bed of which New Zealand city by over a yard, allowing land to be reclaimed? An 1859 gold strike brought miners to Cherry Creek, the site of which future state capital? An 1861 song urged Maryland to avenge the "patriotic gore that flecked the streets" of which city? An 1862 law freeing Washington, D.C.'s slaves offered to help them move to Haiti or which African country? An 1867 flood in which state allowed a steamboat to travel down Chattanooga's main street?