The First Continental Congress helped unite the separate colonies
Limits of fiscal policy include
difficulty of changing spending levels, predicting the future, delayed
results, political pressures, and coordinating fiscal policy.
I would say the Hittites and the Celts. The Hittites thrived and disbanded before the beginnings of the Roman empire. The Celts were absorbed by the Romans but were keen to follow their ways.
The train was the greatest impact i believe
