This travelogue begins with the vast agricultural wealth of the country, whose farmers can produce four times the amount required to feed the country's population. As such, the export of these agricultural products is a vital part of the country's economy. This agricultural tradition extends to its food consumption, as Denmark's vast array of open faced sandwiches is world renowned. It also extends to flower production and the Dane's love of flowers, which are sold in public markets. Denmark has a strong social support system, as witnessed by the free and mandatory public schooling, free medical services for expectant mothers and children, the provision of cooperative housing and housing for seniors, and the provision of old age pensions without premiums.