Table:
text: United States Ambassador to Bolivia
List
List
Representative Title Presentation_of_Credentials Termination_of_Mission Appointed_by
John Appleton Chargé d`Affaires January 3, 1849 May 4, 1849 James K. Polk
Alexander Keith McClung Chargé d`Affaires July 3, 1850 June 30, 1851 Zachary Taylor
Horace H. Miller Chargé d`Affaires December 18, 1852 January 18, 1854 Millard Fillmore
John W. Dana Chargé d`Affaires February 23, 1854 September 24, 1854 Franklin Pierce
John W. Dana Minister Resident September 24, 1854 March 10, 1859 Franklin Pierce
John Cotton Smith Minister Resident March 10, 1859 May 1, 1861 James Buchanan
David K. Cartter Minister Resident July 28, 1861 March 10, 1862 Abraham Lincoln

Question: Who is the representative with a letter of credentials for the United States Ambassador to Bolivia dated February 23, 1854?

Question: What is the title of the United States Ambassador appointed by James K. Polk to Bolivia?

Question: At how many US ambassadors to Bolivia is the end of the mission of the Franklin Pierce-appointed representative with the title of chargé d'affaires?