Question

What is one of the possible reason silpuhim disapered

Answer 1

However, by the middle of the first century A.D., the silphium had all but vanished. The main explanation may be the overexploitation that has occurred since Cyrenaica became a Roman senatorial province, as well as the abandonment of the former tight regulation over its collection.

Answer 2

The main reason could be the overexploitation since Cyrenaica became a Roman senatorial province, and the abandonment of the previous strict control over its collection.