Singing Christmas Tree upon the location. Since then, the singing Christmas tree concept has spread to Canada, the Philippines, South Korea, Switzerland and Sri Lanka. The most attended tree takes place in Knoxville, Tennessee, with 60,000 attendees in 2007. The first Christmas trees came to the United States in the 1740s from Moravian (now part of the Czech Republic) settlers. In 1851, the first commercial tree lot in the United States was set up in New York City. President of the United States Franklin Pierce set up the first Christmas tree in the White House in 1856. Artificial trees were first developed in
Presidency of Franklin Pierce over the expansion of slavery in the American West. In the wake of the Kansas–Nebraska Act, the Whig Party was destroyed and the Democratic Party was severely weakened. With the destruction of the Whigs, two new major parties emerged in the nativist American Party and the anti-slavery Republican Party. Pierce actively sought renomination at the 1856 Democratic National Convention, but he was defeated by James Buchanan, who had served as Pierce's ambassador to Britain. Buchanan went on to win the 1856 presidential election, defeating the nominees of the American Party and the Republican Party. Pierce is viewed by presidential historians