Perhaps in the Civil War era, the Dred Scott decision angered Abolitionists as the Supreme Court declared African Americans could not be a US citizen as they were not mentioned as as in the Constitution and that Congress abused their power by abolishing Slavery above the Mason Dixon line and in the New Western territories.
Northerners and famously Fredrick Douglass denounced the court ruling.<span />
It helped people understand their surroundings to let them know which places were dangerous and which ones wernt
They were the first American expedition to cross what is now the western portion of the United States.
Here you go I typed it up
Answer:
that is light work. Get smarter
Explanation: