Final answer:
The Supremacy Clause in the Constitution represents the federal government as the final authority when state and federal jurisdiction overlap.
Step-by-step explanation:
The federal government as the final authority when the state and federal governments' jurisdiction overlap is represented by the Supremacy Clause in the Constitution. The Supremacy Clause, found in Article VI, establishes that the Constitution, national laws, and national treaties are the supreme law of the land. This means that if there is a conflict between state and federal laws, the federal law prevails.