How did Henry Shreve's modified steamboat contribute to the development of transportation?• It had no significant impact on transportation during its time. • It was primarily used for transatlantic travel. • It was the first steamboat to navigate the Mississippi River. It was faster and more efficient on rivers by being able to overcome obstacles like sandbars and snags.

The correct answer is: It was faster and more efficient on rivers by being able to overcome obstacles like sandbars and snags.

Henry Shreve's modified steamboat, called the "Enterprise," was specifically designed to navigate the Mississippi River. It had a hull that was reinforced with iron, which allowed it to cut through snags and sandbars that previously posed significant obstacles to river transportation.

By being able to overcome these obstacles, Shreve's steamboat significantly improved the efficiency and speed of river transportation. It made the transportation of goods, resources, and people along the Mississippi River faster, more reliable, and more cost-effective. This development played a crucial role in opening up the American interior and enabling the growth of trade and commerce in the Midwest and Southern regions of the United States.