Final answer:
The Missouri Compromise aimed to maintain the balance between free and slave states, the Monroe Doctrine established the U.S. as a dominant power in the Americas, and the completion of the Erie Canal facilitated trade and transportation.
Step-by-step explanation:
The Missouri Compromise, enacted in 1820, was an important event in American history because it aimed to maintain the balance between free states and slave states in the United States. It allowed Missouri to enter the Union as a slave state and Maine as a free state, thus preserving the delicate equilibrium between the North and South. This event ultimately contributed to the growing tensions over slavery, which would lead to the American Civil War.
The Monroe Doctrine, declared in 1823 by President James Monroe, was another significant event that had a lasting impact on America. It stated that any European interference or colonization in the Western Hemisphere would be seen as a threat to the United States. This assertive foreign policy statement established the United States as a dominant power in the Americas and marked the beginning of American imperialism.
The completion of the Erie Canal in 1825 was a crucial event as it greatly facilitated trade and transportation between the Midwest and the East Coast. This man-made waterway connected the Great Lakes to the Atlantic Ocean, allowing for the efficient movement of goods and people. The Erie Canal played a pivotal role in the economic development of the United States, promoting trade and fostering the growth of cities along its route.
Learn more about Events in American History