Assertion: empire's control | /r/HasProperty | lucrative business
Facets:
value: for the kings of ghana
type: TRANSITIVE-OBJECT
Source sentences:
text: Control of regional trade was a lucrative business for the kings of Ghana who passed on goods like gold, ivory, hides, ostrich feathers, and slaves to the Muslim merchants (particularly the Sanhaja Berbers) who sent camel caravans that crossed the Sahara from North Africa and which brought much-valued salt to the south.