Well, the underground railroad was used to help <span>African-American slaves to escape into free states and Canada with the aid of abolitionists and allies who were sympathetic to their cause.
Hope this helps! :)
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Number 4 because the manhattan project dealt with atomic bombs
The Swiss immigrants settled in the northern part of Texas. They helped to bring dairy farming to Texas. For example, The first Norwegian immigrants settled near the Dallas area and in East Texas.
