the u.s. government has announced new policies.
u.s. citizens can travel to many countries visa-free.
the u.s. economy is the largest in the world.
many students dream of studying at u.s. universities.
the u.s. dollar is used as a global currency.
u.s. relations with china are complex and important.
the u.s. military maintains bases around the world.
u.s. technology companies lead in innovation.
the u.s. president serves a four-year term.
u.s. culture has influenced people worldwide.
the u.s. constitution is one of the oldest written national constitutions.
u.s. exports include agricultural products and machinery.
the u.s. government has announced new policies.
u.s. citizens can travel to many countries visa-free.
the u.s. economy is the largest in the world.
many students dream of studying at u.s. universities.
the u.s. dollar is used as a global currency.
u.s. relations with china are complex and important.
the u.s. military maintains bases around the world.
u.s. technology companies lead in innovation.
the u.s. president serves a four-year term.
u.s. culture has influenced people worldwide.
the u.s. constitution is one of the oldest written national constitutions.
u.s. exports include agricultural products and machinery.
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