Answer:
1. Right to all land from the Atlantic to the Pacific --- Manifest Destiny
2. 2,900,000 immigrants to the United States --- Ireland
3. The state with more free Blacks than slaves --- Delaware
4. Beginning of the Mississippi River --- Lake Itasca
5. Most important crop in the South --- Cotton
6. Most densely-populated state in the North --- Massachusetts
7. Considered to be the pre-Civil War capital of the South --- Charleston
Explanation:
1- The doctrine of Manifest Destiny is a phrase and idea that expresses the belief that the United States of America is a nation destined to expand from the Atlantic coasts to the Pacific.
2- It is estimated that a total of 3 million Irish emigrated to North America between 1820 and 1920. This large emigration is partly explained by the Great Famine between 1845 and 1855, which severely affected Ireland in the nineteenth century and pushed a large part of its population to emigrate.
3- Delaware was the state with the lowest proportion of slaves in the total of its African-American population. It is estimated that, prior to the Civil War, only 10% of its African-American population were slave, while the vast majority was free.
4- Lake Itasca is a small glacial lake in the United States located in the northwest of the state of Minnesota and which is officially considered the birthplace of the Mississippi River.
5- By the middle of the nineteenth century, cotton had become the basis of the economy of the southern United States where the cultivation and harvesting of cotton became the main occupation of slaves.
6- The most densely populated state in the North, in the 19th century, was Massachusetts, mainly due to the amount of population of the city of Boston.
7- Charleston is the second most populous city in the state of South Carolina. The city was founded as Charlestown or Charles Towne, Carolina in 1670, and moved to its present location in 1680. Until 1800, Charleston was the fifth largest city in North America, after Philadelphia, New York, Boston and Quebec. Because of this characteristic, it was considered the main urban center of the southern United States.
