For example , the oases of LOCATION@1 , LOCATION@2 and LOCATION@3 , situated in modern-day LOCATION@4 , have at various times been vital to both North-South and ORGANIZATION@1 trade in the LOCATION@5 .

For example , the oases of LOCATION@1 , LOCATION@2 and LOCATION@3 , situated in modern-day LOCATION@4 , have at various times been vital to both North-South and ORGANIZATION@1 trade in the LOCATION@5 desert .
