It disturbs the ecosystem.
Vietnamese refugees who fled Vietnam by boat
The Late Woodland period, which is characterized by a lack of the non-local artifacts and materials (copper, etc.,) that had been seen in the previous 500 years, began around AD 300. Despite the apparent reduction of inter-regional exchange, the Late Woodland period was a time of important cultural changes.
Jonathon Edwards death has been cited to have ended the age of faith.