The motive behind the high tariffs imposed by nations on imports of manufactured goods, prior to world war ii, was to:

The answer is to safeguard domestic industries from foreign competition.
Tariffs are normally levied by domestic governments to safeguard new industries from foreign competition, to defend aging industries from foreign competition, to defend against foreign companies selling their products for a price lower than their expenditures and to make revenue.

If i’m not mistaken your answer should be the freemen’s bureau started them. i really hope i could ! good luck