What were the main causes for the enclosure of lands?

Unlike the sixteenth-century enclosures that promoted sheep farming, the land being enclosed in the late eighteenth century was for grain production. The new enclosures were happening in a different context; they became a sign of a changing time. From the mid-eighteenth century, the English population expanded rapidly. Between 1750 and 1900, it multiplied over four times, mounting from 7 million in 1750 to 21 million in 1850 and 30 million in 1900. This meant an increased demand for food grains to feed the population. Moreover, Britain at this time was industrializing. More and more people began to live and work in urban areas. Men from rural areas migrated to towns in search of jobs. To survive they had to buy food grains in the market. As the urban population grew, the market for food grains expanded, and when demand increased rapidly, food grain prices rose.By the end of the eighteenth century, France was at war with England. This disrupted trade and the import of food grains from Europe. Prices of food grains in England sky rocketed, encouraging landowners to enclose lands and enlarge the area under grain cultivation. Profits flowed in and landowners pressurised the Parliament to pass the Enclosure Acts.