The total amount of a product available in a market at a given price is called the supply.
There are a lot of factors that affect supply such as the price of the product, price of similar goods in the market, price of inputs, and the number of suppliers.
What Thomas Paine may have meant by that is that government is necessary for social and political change. Based off of enlightenment ideas such as unalienable rights and revolutions in the america’s, People have the right to life, liberty, and property. This led to revolutions in Haiti inspired by what happened in the United states a couple years back and the French Revolution. This “necessary evil” could be representing how bad things need to happen in order to make humanity progress because without it, humanity would most likely never learn and not be as developed as it is now.
The powers of the national government are limited