US firms are at the forefront of technological advances.
FROM PLATO
Answer:
The Constitutional Convention took place from May 14 to September 17, 1787, in Philadelphia, Pennsylvania. The point of the event was decide how America was going to be governed. Although the Convention had been officially called to revise the existing Articles of Confederation, many delegates had much bigger plans.
Explanation:
Answer:
People had money to spend on entertainment.
Explanation:
If that isn't right then do this answer:
The government used military technology to encourage it.
Cave men are humans but went extinct in Europe 40,000 years ago. There are many myths about this and I am pretty sure there is not a correct answer yet. Great question though!