__ The U.S. purchased the Louisiana Terntory even though the Constitution doesn't mention this as a national power A. Inherent powers B. Expressed powers C. Supreme powers D. Implied powers

## Step 1<br />The question is asking about the type of powers that allowed the U.S. to purchase the Louisiana Territory, even though the Constitution does not explicitly mention this as a national power. The options provided are: Inherent powers, Expressed powers, Supreme powers, and Implied powers.<br /><br />## Step 2<br />The U.S. Constitution does not explicitly grant the federal government the power to acquire new territories. However, the power to purchase the Louisiana Territory was justified by the concept of implied powers.<br /><br />## Step 3<br />Implied powers are those powers that are not explicitly stated in the Constitution but are inferred from the Constitution. These powers are derived from the Necessary and Proper Clause (also known as the Elastic Clause) of the Constitution, which allows Congress to make all laws necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this Constitution in the government of the United States, or in any department or officer thereof.<br /><br />## Step 4<br />In this case, the power to purchase the Louisiana Territory was an implied power because it was not explicitly stated in the Constitution but was inferred from the Necessary and Proper Clause.