Answer: over thirty thousand miles
Explanation:
In 1840 it had almost reached three thousand miles
And by 1850 it was more than 90 thousand miles.
President Lincoln made the use of force necessary because of his prior military actions that show that he already assumed war and has been prepared for it. The South did not like the coercive policy, diplomacy using threats, that the President had sent. Alexander Stephen that Lincoln's provocative actions will not help to stop the war. Instead, it pushed the South to justify it's use of force when necessary.
•Industry vs. Farming. ...
•States' Rights. The idea of states' rights was not new to the Civil War. ...
•Expansion. As the United States continued to expand westward, each new state added to the country shifted the power between the North and the South. ...
•Slavery. ...
Answer: In 1884, the Berlin Conference was convened to discuss African colonization, with the aim of setting up international guidelines for making claims to African land to avoid conflict between European powers.
So B. European imperialists in Africa