Legislatures, and courts are the most effective anvenues for defending and expanding our rights and liberties
Answer:
extend
Explanation:
Polk's goal was to spread the United States across the North American continent from the Atlantic Ocean to Pacific Ocean. His goal was to secure the territories of <u>New Mexico </u>and <u>California</u>, which allowed him to extend the United States to the Pacific Ocean.
True. Steamboats were much more efficient
