Why were the corn laws introduced in 1815

The Corn Laws were trade laws designed to protect cereal producers in the United Kingdom of Great Britain and Irelandagainst competition from less expensive foreign imports between 1815 and 1846. To ensure that British landowners reaped all the financial profits from farming, the corn laws imposed steep import duties, making it too expensive for anyone to import grain from other countries, even when the people of Great Britain and Ireland needed the food (as in times of famine).