Yes. Inflation and deflation of the prices is controlled by the governmental bodies. This is not dependent only on the cryptocurrencies. Various financial activities that are taking place at the national and the international level determine the prices in a specific country. Moreover the economic growth is much relatable to the development in different spheres.
Not to mention that manipulating national currencies (eg. by printing money) is often done by purpose, to make own companies with their products cheaper than of its foreign competition. This is how China for years had been working as a factory for the world.
Each state is trying to help its producers by taking various tricks, whether it is a deliberate depreciation of the national currency, taxation of imports with various duties, and much more.
It’s just that some states use legal methods, while others may cheat.
overall US govs has been cheating all this time anyway - they have printed money so they inflated all funds of holders outside of the US, and then gave these printed money to the citizens