they never destroyed trade, the crash was already underway when the tariffs were set in place and they didn't help the depression but that was because of the retaliation tariffs. We as a country are past the stage of retaliation and have began negotiating. If the crash was gonna happen because of the tariffs it would've already happened
Those tariffs protected industrialists from foreign competition, but also negatively impacted average consumers and local farmers due to the increased cost of goods. McKinley should be more praised for his attempts to lower the unemployment rate, which did more to stimulate our majority consumer driven economy.