Complex sentence: Born in Potenza, Basilicata, Colombo entered politics as a member of the Christian Democratic Party, and having held several cabinet posts, he was Prime Minister of Italy from 1970 until his resignation in 1972.
Split into simpler sentences: Born in Potenza, Basilicata, Colombo entered politics as a member of the Christian Democratic Party. Having held several cabinet posts, he was Prime Minister of Italy from 1970 until his resignation in 1972.