The cotton industry is distributed in three principal groups.
They are distributed over the whole island, but are perhaps most frequent towards the centre and in the Nurra.
The rainfall is very unequally distributed: in the western part, which comes near to the limits of the rainless region of Asia, it is very scanty, and scarcely averages more than 5 in.; in the south-west the fall is more copious, sometimes exceeding 100 in.
Education is very widely distributed, and in every state it is compulsory for children of school ages to attend school.
The Roman Catholic landowners lost their estates, all or part according to their degree of guilt, and these were distributed among Cromwell's soldiers and the creditors of the government; Cromwell also invited new settlers from home and from New England, two-thirds of the whole land of Ireland being thus transferred to new proprietors.