There are three:
Coercive acts: Four British acts of 1774 meant to chastise Massachusetts for the destruction of three shiploads of tea. Known in America as the Intolerable Acts, they led to open revolt in the northern colonies.
Townshend act of 1767: British law that recognized new duties on tea, glass, lead, paper and painters' colors imported into the colonies. Townshend duties led to boycotts and intensified tensions between Britain and American colonies.
Taxation without representation: They had Virtual Representation, which was not representation at all.The statement made by British politicians that the interests of the American colonists were sufficiently represented in Parliament by merchants who dealt with the colonies and by absentee landlords (mostly sugar planters) who owned estate in the West Indies.
The Southern colonies had two kinds of farmers: the large farms and plantation owners and the small farmers. The main crops planted in these colonies were tobacco, rice and indigo. These crops sold for cash and were usually exported. Producing these crops needed sizable manpower so these large farms and plantations depended on slaves to do the work for them.
Answer: C. the downing of an American U-2 spy plane over the Soviet Union.
The downing of the American spy plane in Soviet Union named U-2 contributed mostly to the cancellation of a scheduled summit between the Soviet Union's leader Nikita Khrushchev and that of President Dwight D. Eisenhower.
<span>The Dred Scott Case furthered the gap between abolitionists and slaveholders. By asserting that a slave was property and had no free will or agency, the northern states dug deeper into the abolitionist movement. This also spurned many to stop further acquisition of slaveholding lands in order to maintain free states and places where slaves couldn't be found. By having a mission to stop the spread of slavery, this put a strangehold on land starved plantation holders who saw the western acquisitions of the Mexican Cessation as potential cotton or tobacco lands. Stopping their spread made the southern states feel oppressed and furthered their own wishes to keep their own standard of living.</span>