Multiple choice Which tariff was the highest protective tariff in American history. Tariff of 1828 Tariff of 1848 Hawley-Smoot Tariff Tariff of Abomination Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Smoot-Hawley Tariff Act of 1930 raised U.S. tariffs on over 20,000 imported goods to record levels, making it the highest protective tariff in American history.