Who was Livingstone and why did he administer the other of office

He was an advocate for the Federal Constitution, and served as a delegate to the New York convention held at Poughkeepsie in 1788, to ratify it. On the 30th of April, 1789, Livingston administered the presidential oath of office to George Washington.

Explanation:

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.