Only olive oil was a subject of long-distance trade.

It seemed incredible that such an important industry could have been founded and sustained with long-distance trade alone.

This central meeting point, becomes the focus of long-distance trade and how it began to increase.

When intrusion from the outside world finally came, it was in the form of long-distance trade for ivory.

Their terrain is also relatively unfavourable to heavy industry and long-distance trade.

This is thought to be about an average size for a ship used in long-distance trade of its era.

These changes can be attributed to the increased reliance on agriculture and expansion of long-distance trade during this period.

The critical role played by commerce and long-distance trade is of particular importance.

Later, in the form of contracts, it would lubricate long-distance trade.

They held the political power and monopolized the profits of long-distance trade.