Final answer:
The main economic motive for the U.S. constructing the Panama Canal was to make trade and travel faster and easier.
Step-by-step explanation:
The main economic motive for the U.S. constructing the Panama Canal was to make trade and travel faster and easier. By connecting the Atlantic and Pacific Oceans, ships no longer had to travel around South America, saving time and money. This boosted international trade and allowed for easier movement of goods and resources between the east coast and west coast of the United States.
Learn more about The main economic motive for the U.S. constructing the Panama Canal