American System

Congressman that proposed?
Was it Henry Clay

It was designed to make the nation _____________ not needing to trade with others to survive

Yes.

Do you know what goes in the blank

American System works in that blank. Check your book to see if another word or phrase is given.

For my notes it says

American System : transportation to unite the nation promoted by Congressman Henry Clay a strong nationlist to protect nations business from foreign competition and help pay for transportation improvements to nation. Establish a national bank that would promote single currenct making trade easier and loan money to nations to pay for transportation improvements to nation. Improve nations transportation system which were important for a strong economy by builing roads bridges and railroads quickly and cheaply to move goods

or the word independent

Independent works much better. :-)

The American System, originally proposed in the early 19th century, was indeed put forward by Congressman Henry Clay. He introduced this system as a comprehensive economic plan geared towards making the United States self-sufficient and less reliant on international trade for its survival.

To confirm this information, you can perform a quick online search by entering relevant keywords such as "American System Henry Clay" or "Congressman who proposed the American System." This will provide you with reputable sources and references that support the fact that Henry Clay was the key figure behind the American System.