Germany and are the two countries
They pledged mutual allegiance
The USSR and other Warsaw pact nations invaded
Both the state government and the federal government have the power to collect taxes Federal government usually provide some basic regulation regardng the taxation, and the states could determine which things that could or could not be used as a tax write off. That why a lot of companies are made in a more tax favorable state such as delaware
Hope this helps!
-Payshence xoxo