<span>He sent the marines and Air Force into North Vietnam.
</span>
Answer: True
Explanation: The emancipation proclamation legally freed the slaves in the United States. By winning the war the North would ensure the law of the United States was in place over the Southern States instead of the law of the Confederacy.
At the beginning of the Civil War (and while running for President) Abraham Lincoln had said that he would not week to end slavery. The emancipation proclamation marked a definate (and permanent) change in that policy.
At the Berlin Conference the principle of Effective Occupation was established, that said that a country needed to have an actual presence in the colony to be bale to claim it.
In practice, this meant at least <span>c. establishing businesses there. Additionally, they could make contact and conquer the local rulers. </span>
The primary source of uncertainty over the limits on presidential power is that the Constitution grants the President the right to issue executive orders, which can override both Congress and the Judiciary.