Complex sentence: After serving as Speaker of the Massachusetts House of Representatives in 1763, he was selected as a delegate to the first colonial (or Stamp Act) congress of 1765 meeting in New York on October 7, Ruggles was elected its president.
Split into simpler sentences: After serving as Speaker of the Massachusetts House of Representatives in 1763, he was selected as a delegate to the first colonial (or Stamp Act) congress of 1765. Meeting in New York on October 7, Ruggles was elected its president.