Answer:
Because it was considered one of the bloodiest wars in history and after world war 2 came along world war 1 still bloodier.
Answer: Metal rust
Explanation: Because its changing color
The Union states had about 3 times the amount of land than the Confederate states did.
Answer:
Marginal costs and benefits are a vital part of economics because they help to provide the relevant measurement of costs and benefits at a certain level of production and consumption. If measured marginal costs and benefits are provided, it is much easier to calculate the ideal price and quantity.