At the same time, she was doing research for her master's thesis on the reservation's subsistence economy and quickly became involved in local issues.

The subsistence economy, however, provides security for irregular workers.

Most of its 100,000 residents arrived in the 1990's, and they have created a subsistence economy.

These aspects have had a devastating impact on the local native subsistence economies and environment.

Did it do no more than keep a subsistence economy running?

South Sudan has a population of around 8 million and a predominantly rural, subsistence economy.

A subsistence economy also has no money of any sort.

About 75% of the country's population relies primarily on the subsistence economy.

The big problem is to move them into something that reaches somewhat outside their own non-monetarised subsistence economy.

If you go back far enough, of course, all our ancestors lived in basic subsistence economies where cash never changed hands.