James Buchanan Jr was an American lawyer, diplomat, and politician. He served as the 15th president of the United States from 1857 to 1861, as the secretary ...
James McGill Buchanan Jr was an American economist known for his work on public choice theory originally outlined in his most famous work, The Calculus of ...
The presidency of James Buchanan began on March 4, 1857, when James Buchanan was inaugurated as 15th president of the United States, and ended on March 4, ...