<span>They built a system of bridges to cross over steeply sloped land.
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One of the main ways in which the state constitutions were helpful to the writing of the U.S. Constitution was that "<span>D. The authors of the state constitutions had learned lessons that were useful in writing a new U.S. Constitution," since during this time many of the states operated as small "country" systems when it came to governance. </span>
In what I know of D is correct because the Commissioners are the heads of the government.
There were actually two Industrial Revolutions. The first occurred in Great Britain in the mid-17th and early 18th centuries as that nation became an economic and colonial powerhouse.
The second Industrial Revolution occurred in the U.S. beginning in the mid-1800s.
Britain's Industrial Revolution saw the emergence of water, steam, and coal as abundant sources of power, helping the U.K. dominate the global textile market during this era. Other advancements in chemistry, manufacturing, and transportation helped Britain become the world's first modern superpower, and its colonial empire ensured that its many technological innovations spread.
The Industrial Revolution in the U.S. began in the years and decades following the end of the Civil War. As the nation rebuilt its bonds, American entrepreneurs were building on the advancements made in Britain. In the coming years, new forms of transportation, innovations in industry, and the emergence of electricity would transform the nation as the U.K. had in an earlier era.
