All of the aforementioned were designed to help the Allied powers during World War II. Even though the US wanted to stay "neutral" when World War II broke out, they did want to benefit by maintaining economic relationships with these countries.
The Lend-Lease Act is a perfect example. This allowed the US government to lend weapons and other materials to nations like France, Great Britain, and China during World War II. If the goods weapons/materials were destroyed, it was on the country using them to replace it.
The Cash and Carry policy was another example of the US government helping the Allied powers. This policy stated that countries may buy materials from the US, as long as they pay in cash and provide transportation for the materials at their own risk.
Both of these show that even though the US was not technically in the war yet, they heavily favored the Allied powers.
Answer:
First off the railroads allowed people to be transported from one city to another in half the time from them walking. This allowed families to see each other and friends to visit. However one problem was how African Americans were treated they were sat in different train cars because of their skin color making a huge drift between whites and African Americans. Nature was affected because trees had to be removed to build the railroads and many forests suffered because of this. Not to mention the smoke from the trains which would pollute the air. Hope this helps.
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