Explain how the u. s. constitution strengthened the power of the federal government.

Federal government was given with exclusive powers by the US Constitution.

Explanation:

US had applied Trias politica which means the three powerful segments of government. The central government is given the power to declare war on nations, collect taxes, regulates the money printing, regulating or establishing international commercial and trade relationships with other countries.  

Make international treaties and scheme out foreign policies. Provide army and navy assistance, charter banks and corporations, federal funding for general welfare. Deciding borders between the states and countries. Power to create courts and judiciary authorities for giving judgments.