10th class hindi model paper

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john hunter was a scottish surgeon, he was a early advocate of careful observation and scientific method in medicine,

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in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

b.   jim crow laws were enacted in northern states.

were unable to make a profit due to their debt.