As the author states, why did Americans “dream” of linking the Atlantic and Pacific Oceans by rail?

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

the united states began searching for a way to reduce oil

-agarvated

it was the first major victory for the colonists.