synoecism
/ˌsɪnoʊˈɛksɪzəm/Definitions
1. noun
The process of two or more neighboring towns or villages merging into one, especially in ancient Greece.
“The ancient Greeks practiced synoecism, leading to the formation of larger city-states.”
2. noun
A town or village formed by the fusion of two or more smaller settlements.
“The synoecism of the villages created a thriving commercial center.”