Off the East Coast, many Soviet Submarines had released their nuclear payload, in the Great Nuclear War. Soon the crews of these submarines realized that they were on their own, as they had lost contact with the Motherland. Soon these ships established contact with one another, and they convened on Long Island Sound. From here they made their way to the Connetquot River, where they commandeered (notably empty) docks and made landfall. The Soviets made camp in abandoned homes, scaring away locals with gunfire and threats.
Over the next few years, defenses, gardens, and walls were built, and people began to squat nearby, with tent slums forming near the core of the village. Eventually, the two groups began working together as best as possible despite the language barrier, with the Americans forming a large working class and producing food for both classes.
This dichotomy between Russophone Aristocrats and Anglophone Farmers created the conditions for a pidgin language to form, which was then taught to second generation Nashgorodians, with the overwhelming majority being able to speak the language. This Language is called Nash Rech (our language). For most of it's history it has been considered improper and somewhat patois, though traders, lower and middle class citizens, and even some authors and officials use it. In the late 2010's it was made a standard language, and notices were officially written in three languages, English, Russian, and Nash Rech.