<span>I believe the
answer is d. Decline of the coal
industry. During this period, America
was now enjoying a period of economic prosperity as citizens now had more money
to spend for things that they couldn’t afford before. Their economy was now one of the most
powerful after the war.</span>
Answer:
a)the Erie canal
Explanation:
From the provided information in the question, it is "the Erie Canal" that fits that information perfectly. As Erie Canal is a Milestone in U.S. Transportation, with a 363 miles long. The construction started in 1817 and got completed in 1825.
It connected the Great Lakes region with the Atlantic coast and improved transportation into the interior of the United States.
It also lowered the cost of transporting goods by ninety percent
It also made New York more populous and became the urban Empire State.
He restored a strong central government. Under the next two dynasties, the Tang and the Song, China experienced a prolonged golden age. It became the richest, most powerful, and most advanced country in the world. Wendi declared himself the first emperor of the Sui (sway) Dynasty.