Complex sentence: The bill introduced by Wilson and passed by the House significantly lowered tariff rates, in accord with Democratic platform promises and dropped the tariff to zero on iron ore, coal, lumber and wool, which angered American producers.
Split into simpler sentences: The bill introduced by Wilson and passed by the House significantly lowered tariff rates, in accord with Democratic platform promises. And dropped the tariff to zero on iron ore, coal, lumber and wool, which angered American producers.