Architecture: 1850s-1890s. 1850s. James Buchanan, at the urging of his niece and White House hostess Harriet Lane, added a wooden greenhouse on the roof of the west terrace in 1857, adjacent to the State Dining Room. One could enter a private world of plants and flowers grown for decorating the house.
A caucus is a meeting of supporters or members of a specific political party or movement. The term originated in the United States, but has spread to Australia, Canada, New Zealand, South Africa, Brazil and Nepal.
The Republican and Democratic parties in each state select delegates based on either caucuses or a primary vote in that state -- the delegates are sent to represent voters in the state.he term caucus apparently comes from an Algonquin word meaning gathering of tribal chiefs, and the main crux of the caucus system today is indeed a series of meetings. To see how this works, let's look at the Iowa caucuses -- the first voting event of the presidential election year.