Very correct comment. In general, the unity of the Russian language, people and culture is amazing. We speak one language thousands of kilometers apart, while in Germany, for example, dialects that are still indistinguishable from individual languages are hundreds of kilometers apart. At the same time, many other peoples also speak Russian, and this allows them to be in a common and unified culture, which was created, in many respects, in the 19th century within the framework of the Russian paradigm. The Russian land is uniting. Many folk costumes of the peoples of the Volga region are organically very similar to Russian costumes. At the same time, there are slight differences, but they only embellish the general similarity. And there are many such examples.