Answer:
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Answer:
The piece of evidence that would best support the claim that "all new territories to the US should decide for themselves whether they will be slave or free" is the Compromise of 1850, that established the precedent that new territories would choose for themselves whether to be slave or free.
Explanation:
The Compromise of 1850 was an agreement between the different states of the United States regarding the status with which the different territories obtained after the war with Mexico would enter the Union. The question was whether these states would be free or slave, and how this would affect the balance between the two groups of states in Congress. Finally, through this agreement California was admitted as a free state, while Utah and New Mexico could define their status through popular sovereignty. The most important part of this agreement was the acceptance of popular sovereignty as the defining method of determining the status of the states against slavery. This would be applied again after the sanction of the Kansas-Nebraska Act, which would lead to a prelude to the Civil War in the event known as Bleeding Kansas.
Immigration, American Policy, and Foreign Policy.
President Wilson's appearance in front of the Congress asking for the declaration of war against Germany in hopes that they could influence the terms of the postwar peace settlement.
He proclaimed that the world must be made safe for democracy, to fight for the right of those who submit to authority to be their voice in their governments, for the rights and liberties of small nations and for the safety of all nations and make the world itself free.
The U.S. Senate then voted in favor of war with 82 votes to 6 and two days later the House of Representatives also voted in favor with 373 votes to 50. This solidified and announced the participation of the United States into the First World War.
