Answer:
Demand and supply
Explanation:
In a market, the demand for a product and the supply of the products affect the price of them.
If a product has limited supply, the price will rise because it is rarer.
If a product has a lot of supply, the price will decrease because it is common.
If product demand is high, prices will rise because sellers want to earn more money.
If product demand is low, prices will sink because sellers need to make some sort of revenue and if the product doesn't sell, they've lost money. If they sell it at a lower price, at least they make some money back.
Of course, there are more factors but demand and supply are the main two, especially in a free market economy.
Maybe you should state the birth dates... what he had done to achieve his name and reputation and finally how as he improved the world.. maybe Alis state is it still used after he has left... remember summarizing is not recreating the whole passage in your words.. its just taking down the main points. You won't even need to do any changes to them.
They support them beacuse when they need omething for trade they demand the trade for a another trade in \\
