Nevada's borders look like this:
However, most of this "state" map is actually property belonging to the federal government. How does this ownership work? Namely:
Does the federal government have to pay to acquire more land? How is the price established?
Does the federal government pay property taxes on that land?
Can other states own land in other states?
Does the federal government have to obey state laws in its use of the land?
Can Nevada acquire that land through eminent domain?
What power of the United States (in the 10th amendment sense) allows the federal government to possess most of Nevada?
(Optional) Do any other countries have similar arrangements where the central government "owns" large amounts of constiuent principalities?
(I'm not looking for an essay, just a basic understanding of this political structure.)