The Preamble includes the phrase "provide for the common defense." Which of the following powers granted by the Constitution relates to the defense of the United States?
A. Congress has the authority to establish post offices.
B. Congress has the authority to declare war against a foreign nation.
C. Congress has the authority to coin money.
D. Congress has the authority to grant patents to inventors.
B. Congress has the authority to declare war against a foreign nation.
"Provide for the common defense" means the government has to provide defense for the whole country hence, protecting the country from a foreign nation.
