List of ambassadors of the United States to China

Columns: Name | Home state | Presented credentials | Terminated
Caleb Cushing | Massachusetts | June 12 , 1844 | August 27 , 1844 | Alexander Hill Everett | Massachusetts | October 26 , 1846 | June 28 , 1847 | John W. Davis | Indiana | October 6 , 1848 | May 25 , 1850 | Humphrey Marshall | Kentucky | July 4 , 1853 | January 27 , 1854 | Robert Milligan McLane | Maryland | November 3 , 1854 | December 12 , 1854 | Peter Parker | Massachusetts | July 15 , 1856 | August 25 , 1857 | William B. Reed | Pennsylvania | May 3 , 1858 | November 11 , 1858 | John Elliott Ward | Georgia | August 10 , 1859 | December 15 , 1860 | Anson Burlingame | Massachusetts | August 20 , 1862 | November 21 , 1867 | John Ross Browne | California | October 28 , 1868 | July 5 , 1869

Example questions:
Who is the namesake of the state where the American ambassador Robert Milligan McClane is from ? | What is the most populous city in the state American ambassador John W. Davis is from ? | What state was the American ambassador to China , Humphrey Marshall from ? | What institution did the American ambassador to China who worked until July 24 , 1873 oppose ?

Answers:
Henrietta Maria | Indianapolis | Virginia | slavery