Why is investments stock important?

A financial market is a market in which people and entities can trade financial securities,commodities, and other fungible items of value at low transcript cost and at prices that reflect supply and demand. Securities include stocks and bonds, and commodities include precious metals or agricultural goods that's why the financial market is very important for the health of economy in many ways for example it help to develop and motivate the new ideas of the new comers in the business because business is the most effective way to develop the economy.