which party did he belong to?
Federalist Party
John Adams
He was the only president elected under the banner of the Federalist Party. During his single term, Adams encountered fierce criticism from the Jeffersonian Republicans and from some in his own Federalist Party, led by his rival Alexander Hamilton. 
states that entered the union during presidential terms North Carolina, Rhode Island, Vermont, Kentucky, Tennessee when was george elected as president? April 30, 1789 was anyone the president before him? No, he was the first president of the United States where did he reside as a president? UNANSWERABLE who was elected as vice president then? John Adams was he an ambassador to any one? Yes - Dutch Republic.
wiki:21616596
John Adams [SEP] Introduction
He was the only president elected under the banner of the Federalist Party. During his single term, Adams encountered fierce criticism from the Jeffersonian Republicans and from some in his own Federalist Party, led by his rival Alexander Hamilton. Adams signed the controversial Alien and Sedition Acts and built up the Army and Navy in the undeclared "Quasi-War" with France. The main accomplishment of his presidency was a peaceful resolution of this conflict in the face of public anger and Hamilton's opposition. During his term, he became the first president to reside in the executive mansion now known as the White House.