The need to win popular support in a republic led to the American invention of political parties in the 1790s.

The tea bag made of paper fiber was a later American invention.

The whole idea of wine tourism is an American invention.

He was proved right, though, about another American invention of the period, the chairlift.

The musical is an American invention; its as simple as that.

The parole system, like the modern prison, was an American invention in the 19th century.

It's an American invention and was first used by officers there two years ago.

I'm not sure that this is true, or that it's even an American invention.

I don't know but what maybe these correspondence-courses might prove to be one of the most important American inventions.