The steamboat helped us travel at faster speeds across the ocean and deliver good faster.
The land between those two Rivers is called "the fertile crescent" so it's pretty self explanatory. It Was fertile land. Good for farming building houses on ect
The best republic suggested Plato is one in which philosophers are in charge. Olly philosophers have been trained and disciplined to govern with the best interests of the republic in mind other forms of government necessary create an us-versus-them'dichhotomy that is ultimately unsustainable
Answer:
Expansion lead to economic promise and fueled the manifest destiny
Explanation:
The north contained a lot of abolitionists while the south was commonly pro-slavery, this increased sectional tension because each side wanted to see their ideals extended into the west.