Answer;
The two generally operate separately, although federal courts may overrule state court decisions that violate the US Constitution or federal law.
Explanation;
-The differences between federal and state courts are defined mainly by jurisdiction. Jurisdiction refers to the kinds of cases a court is authorized to hear.
-State courts have broad jurisdiction, so the cases individual citizens are most likely to be involved in; such as robberies, traffic violations, broken contracts, and family disputes; are usually tried in state courts.
-Federal court jurisdiction, by contrast, is limited to the types of cases listed in the Constitution and specifically provided for by Congress.
-State and local courts are established by a state (within states there are also local courts that are established by cities, counties, and other municipalities, which we are including in the general discussion of state courts). Federal courts are established under the U.S. Constitution to decide disputes involving the Constitution and laws passed by Congress.