> Each of their component countries have their own president, their own political countries, and in a good part and their own policies, besides the group common policies.
US states have their own governor, their own political counties, and in a good part and their own policies, besides the common group policies.
> Would you put California, Wall Street, Shenzhen and a few more at the same level as countries?
Tennessee has approximately the same population, GDP, land area, etc. as Ireland. Texas was an independent country before it was a state.
> That’s also true of the sub-divisions of many European states.
And cities have mayors and school boards have chairmen etc. But a US State has its own Supreme Court with the final decision on matters of state law. The governor of California doesn't work for President Trump.
US states have their own governor, their own political counties, and in a good part and their own policies, besides the common group policies.
> Would you put California, Wall Street, Shenzhen and a few more at the same level as countries?
Tennessee has approximately the same population, GDP, land area, etc. as Ireland. Texas was an independent country before it was a state.