Answer:
World power was consistent with maritime power. Americans knew they needed this to move ships from east to west quickly. If they did that, they would control power because they would control the oceans. The Canal was a geopolitical strategy to make the United States the most powerful nation on earth.
Explanation: Job creation. The fact that the existing Panama Canal can only fit smaller ships is a limiting factor in global trade.
Major supply chain infrastructure development.
Substantial increases in business between Atlantic and Pacific nations.