It gave the United States control of the port of New Orleans for trade.
Explanation:
The Lousiana Purchase was important because New Orleans is located at the mouth of the Mississippi River that at that time was the main highway of trade and commerce for the US. When the French took over New Orleans from the Spanish they revoked the “right to deposit” that allowed the Americans to use the Port.
With the purchase, the US acquired approximately 827 thousand square miles of land for 15 million dollars. It doubled the size of the US, removed threats of French of blocking US trade, added agricultural power to the US.
