This post picqued by interest. I understand the concept of a retail boom in another section of town, pulling foot traffic and business away from an older retail center aka...a downtown.
I'm not sure I'm following you on the mall's impact visa vis immigration. My expereince is that retail sales sector employment - especially retail employment connected with sales volume bonuses and commissions - doesn't translate well to immigrants who are still working to master the language and customs of their new home.
Full disclosure, I grew up in Meriden, which saw a sizeable influx of population from Puerto Rico (a US territory - so no immigration issues) and other Spanish speaking countries in Central/South America, beginning in the 1960s. My read on the cause of this was our governments' urban policies regarding the redevelopment of cities, bank redlining, and the existing residents' desire - partly promoted by government and banks - to move to "quieter," more suburban towns. In Meriden's case towns like Wallingford, Southington, and Cheshire expereinced significant growth in the 1970s through the 1990s. As a result, the properties left behind were older and as a result of being located in a neighborhood perceived as being "decamped," became cheaper and more available to immigrants and newcomers.
My assumption would be that towns like Bethel, Ridgefield, Brookfield etc. would show growth patterns that coincided with Danbury's growth in immigrant population.
Would you take issue with any of the theories I put forward and how would you link the development of a new retail shopping center to these trends?