Then
the Romans further developed the olive tree cultivation by
improving the irrigation techniques in this land with moderate
rainfalls. Not less important, they developed the oil extraction
techniques as demonstrated the excavations in Sbeitla and
El Jem as well as the varying Roman mosaics discovered in
Sousse.
The
Andalusia Arabs who came later to Tunisia profited from the
available facilities to acquire farms and cultivate olive
trees.
As we
have seen, all the passing civilizations storting from the
Phoenicians had made olive tree cultivation one of the cornerstones
in the economy of the country.