Complex sentence: Soon after ending his second term as Governor of Pennsylvania, he switched to the Democratic political party, and was appointed Minister to Russia by President Ulysses S. Grant, and later served as a Democratic Congressman from 1881 until 1887 in the House of Representatives.
Split into simpler sentences: Soon after ending his second term, he switched to the Democratic political party, and was appointed Minister to Russia by President Ulysses S. Grant. He later served as a Democratic Congressman from 1881 until 1887 in the U.S. House of Representatives.