# data[].attributes.body
An ardent believer in manifest destiny, he led the United States into the Mexican War.

# data[].attributes.body
Whig political leader of the early nineteenth century known for his efforts to keep the United States one nation despite sharp controversy among Americans over slavery

# data[].attributes.body
the rights and powers held by individual US states rather than by the federal government

# data[].attributes.body
a principle of US policy, originated by President James Monroe in 1823, that any intervention by external powers in the politics of the Americas is a potentially hostile act against the US.

# data[].attributes.body
was a landmark United States Supreme Court case in which the Court formed the basis for the exercise of judicial review in the United States under Article III of the Constitution.

# data[].attributes.body
a tariff to protect and promote American industry; a national bank to foster commerce

# data[].attributes.body
began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. ... All in all, the news of gold brought some 300,000 people to California from the rest of the United States and abroad.

# data[].attributes.body
marked a period in the political history of the United States that reflected a sense of national purpose and a desire for unity among Americans in the aftermath of the Napoleonic Wars.

# data[].attributes.body
was signed into law by President Andrew Jackson on May 28, 1830, authorizing the president to grant unsettled lands west of the Mississippi in exchange for Indianlands within existing state borders

# data[].attributes.body
Polk called for expansion that included Texas, California, and the entire Oregon territory. The northern boundary of Oregon was the latitude line of 54 degrees, 40 minutes. "Fifty-four forty or fight!" was the popular slogan that led Polk to victory against all odds.

# data[].attributes.body
was a United States federal statute devised by Henry Clay. It regulated slavery in the country's western territories by prohibiting the practice in the former Louisiana Territory north of the parallel 36°30′ north, except within the boundaries of the proposed state of Missouri.

# data[].attributes.body
the 19th-century doctrine or belief that the expansion of the US throughout the American continents was both justified and inevitable.

# data[].attributes.body
was a land deal between the United States and France, in which the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River for $15 million.

# data[].attributes.body
Pride in your country
H.C. Just won the war of 1812