It was designated county seat when Franklin County was created from Hampshire County in 1811 .
Located at the confluence of the Deerfield and Green rivers , and not far from where they merge into the Connecticut River , Greenfield developed into a trade center .
Connecticut River was designated county seat when Franklin County was created from Hampshire County in 1811 .
Located at the confluence of the Deerfield and Green rivers , and not far from where they merge into the Connecticut River , Greenfield developed into a trade center .