I'd say he relies on mathematics since it's "<span>to keep track of sales."</span>
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Immigrants are the people who come from other countries to America and since they come from other countries, they might face certain obstacles like difference in the language, or a difference in the cultures of two countries or finding new jobs in the United States. Finding a new house to live in also poses a problem and the difference in the weather conditions like adjusting in extreme cold conditions of the united states is also a problem.
Answer: The southern states' representatives in Congress were in no hurry to permit a Nebraska territory because the land lay north of the 36°30' parallel — where slavery had been outlawed by the Missouri Compromise of 1820.
The Napoleonic Wars (1803–1815) were a series of major conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European powers formed into various coalitions. It produced a brief period of French domination over most of Europe.