Do states have different governments? Does government bind states together? If so, how?

All State governments are modeled after the Federal Government and consist of three branches: executive, legislative, and judicial. The U.S. Constitution mandates that all States uphold a “republican form” of government, although the three-branch structure is not required. The federal system grants states large autonomy over lawmaking within their borders, so long as they do not violate citizens' rights or contradict federal laws. ... This system allows local state governments to be responsive to the particular needs of their citizens while binding the states together into a larger nation.

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they protect them in many ways.

most build a museums

give the museums money to support and finace and advertise there relgion.

cultivate talents such as cultural relics management and cultural relic protection and restoration.

what are the others?