Dumping is a type of pricing policy used by companies to sell goods or services at a price lower than the usual market price in a foreign country. Companies do this to gain market share and increase their profits. It's like when you go to the store and buy something for cheaper than its usual price, only in this case the company is selling the goods overseas. It can be bad for the other companies in the country because they can't compete with the cheaper prices, and it can also hurt the economy of the foreign country because they don't make as much money as they would have without the dumping.