Answer:
Slavery played the central role during the American Civil War. The primary catalyst for secession was slavery, especially Southern political leaders' resistance to attempts by Northern antislavery political forces to block the expansion of slavery into the western territories.
Why is slavery wrong?
Slavery increases total human unhappiness.
The slave-owner treats the slaves as the means to achieve the slave-owner's ends, not as an end in themselves.
Slavery exploits and degrades human beings.
<span>They decided that they had the right to choose to leave the Union.</span>
The statement, <em>American Individualism was sufficient to promote America's emergence as an industrial power in the late 19th century is </em><em>true</em> since it's associated with American Individualism with a view of freedom to achieve based upon one's talents, abilities, and ambition. It is reflected during the 18th century and 19th Century when Europe first experienced a dramatic rise in technological inventions which ushered the Industrial Revolution. It increased individual wealth, productivity, and technology led to the emergence of urban centres. Serfs and peasants were expelled from their ancestral lands thus flocking into the cities in search of factory jobs, thus increasing the city populations of cities which became increasingly diverse
The arrangement was for Panama to have Panama Canal.