The land was then used in the aparceria system (farmers rent land in return for payment of a proportion of the harvest obtained).

In 1677 the first agreement to rent land for farming purposes was signed.

The resulting land hunger increased prices 7 fold and made it easier for nobles to sell or rent land rather than farm it themselves.

Traditionally, farmers have achieved economies of scale by renting land and in good times they can accumulate large amounts of cash.

Generally speaking, owning or renting land or a building gives one the right to use and develop the air rights.