Which person became president in a sudden and unexpected way after the death of president William Henry Harrison?

The British American dispute over the border of Maine in the 1840’s was solved:

One argument against annexing Texas to the United States was that the annexation:

Texas was annexed to the United States as a result of:

In the 1840’s the view that God had ordained the growth of an American nation stretching across North America was called:

In the Oregon treaty with Britain in 1846, the northern boundary of the United States was established to the Pacific Ocean along the line of:

One reason that the British government decided to compromise on the Oregon Country border was:

During the presidency of John Tyler, his views were so Democratic that his party the Whigs officially kicked him out. Why had he originally joined the Whig party in the first place?

In his quest for California, President James K. Polk

During the Mexican War, the Polk administration was called upon several times to respond to “spot” resolutions indicating where American blood had been shed to provoke the war. The resolutions were frequently introduced by:

The terms of the Treaty of Guadalupe-Hidalgo ending the Mexican War included:

Those people most opposed to President James K. Polk’s expansionist program were the

The Wilmot Proviso, introduced into Congress during the Mexican War, declared that

Of all the pieces added to American territory in our history, the largest was:

According to the principle of “popular sovereignty” the question of slavery in the territories would be determined by:

Who was the Whig war hero of the Mexican War who was elected president in 1848, and then died two year later giving the presidency to his vice president Millard Fillmore?

In his “Seventh of March” (1850) speech, Daniel Webster:

What was the basic compromise involving in the Compromise of 1850?

The election of 1852 was significant because it

The man who opened Japan to the United States was:

The Senator known as the “father of popular sovereignty” and who authored the Kansas-Nebraska act was:

(Extra credit) The secretary of State for the Tyler Administration was:

(Extra Credit) The Ostend Manifesto was a document from the Pierce administration that involved this nation: