Which of the following best exemplifies how the concept illustrated in the above map may have directly led to the collapse of both the Roman Empire and Han China? Ainternal issues such as inequality led to rebellionsinternal issues such as inequality led to rebellions

Bintensive agriculture led to desertificationintensive agriculture led to desertification

Cincreased trade led to the spread of disease increased trade led to the spread of disease

Dfear of new religions led to cultural isolation