The railroads had a much greater Impact on America than the canals and steamboats, as these allowed you to cross the country much, much quicker. This also allowed food, mainly cattle to be transported, without the flesh rotting. It also had a big Impact on the Native Americans, as this went through a lot of their land.
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The primary events that led to the United States declaration of war against Germany were the Zimmerman Telegram and Germany's proclaim intention to resumeunrestricted<span> submarine warfare. </span>
Han in the Xiongnu were several of the battles from "133 BC to 89 AD". During the reign of the WU emperor where the Han Chinese won over the Xiongnu, before these battles the Xiongnu were a nomadic group that reigned in modern Mongolia.
During these battles political instability was generated, producing that the state of Xiongnu was divided in 2 parts and had crisis of successions, having massive revelations between its towns the Wusun, Wuhuan and Dingling.
In 60 BC Han China established the protectorate in the western regions beginning the decline of the Xiongnu reign.
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