It was mainly developments in the "steel" industry that made important contributions to improvements in the transportation system in the United States during this time, since the major advancement in transportation was in the railroads, which were made from steel.
<span>to make sure the Union Army could not use Confederate resources</span>
Answer:
The Boxer Rebellion occured because many European contries were selling illegal drugs like opium to Chinese citizens. A group of Chinese citizens formed and became the Boxer Rebellion. They fought against the marketing of drugs like opium and heroin that were being widely sold and bought in China.
