Answer:
Trans-Saharan trade routes were primary land-based.
The Silk-Road was both sea and land-based.
Explanation:
The trans- Saharan trade route connected the sub-Saharan, north-Africa and the Mediterranean, the camel was the primary source of trade without domestication camel this trade route was not possible, African ivory, salt, and gold were traded in this route and in return they get horses, dates, and salt, etc.
While on the Silk route Silk was the major product of trade, this road was named silk road because the major and main trade is "Silk" in ancient times this road connects china with the roman empire.