The astrolabe was basically a map of the stars, you could use it to navigate by connecting what stars you see and what stars are on the astrolabe. It was also important for religious groups that built their religion off the stars!
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The answer is A! :) hope this helps
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How did the East benefit from interstate railroads in the 1850s</h3>
Railroads played a large role in the development of the United States from the industrial revolution in the North-east (1810–1850) to the settlement of the West (1850–1890). The American railroad mania began with the founding of the first passenger and freight line in the nation of the Baltimore and Ohio Railroad in 1827 and the "Laying of the First Stone" ceremonies and beginning of its long construction heading westward over the obstacles of the Appalachian Mountains eastern chain the following year of 1828, and flourished with continuous railway building projects for the next 45 years until the financial Panic of 1873 followed by a major economic depression bankrupted many companies and temporarily stymied and ended growth.
Poor people lived in one room homes, but rich and wealthy people lived in two story houses which usually had four rooms upstairs and two rooms downstairs
No, the south thought of slavery as a way of life. Without slaves they thought daily life would be extremely hard and if not impossible.