The group of roads that stretch from the mediterranean to china was known as a. the caravan trail c. the silk road b. the savanna d. the trade highway

The group of roads that stretch from the Mediterranean to China was known as c. the silk road

C. the Silk Road or Silk Route

Idon’t know the answer sorry

Primary sources are usually  more accurate and are written by someone who experienced it or witnessed it. secondary sources are those who heard of it after the fact that can lose details and or twist the event in a light that benefits them.