Individuals are free to produce and sell whatever products they wish.

Yes

Explanation:

They can't actually sell anything but they can sell a majority of things.

Yes

Explanation:

This is called Free Enterprise System! It is a type of economy where products, prices, and services are determined by the market, not the government. Things that are free are unconstrained, and a business is an enterprise. So, free enterprise refers to an economy where businesses are free from government control.

the right answer is the constitution

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.