Answer:
150 years ago, the construction of the First Transcontinental Railway was completed in the United States. The implementation of the project has become one of the most ambitious scientific and technological achievements of the United States in the 19th century and has led to a revival of the national economy. However, the construction was mainly carried out in territories captured from the Indians. According to historians, the highway has greatly accelerated the process of extermination and enslavement of the indigenous people of North America, and also contributed to the destruction of natural diversity on the continent.
Explanation:
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<span>The correct answer is letter C. The United States counteracted the German threat to invade Haiti and Santo Domingo by lending military support and selling weapons. They did this to protect the people of the Dominican Republic as well as the lives of many Americans.</span>