Harriet Tubman is perhaps the most well-known of all the Underground Railroad's “conductors.” During a ten-year span, she made 19 trips into the South and escorted over 300 slaves to freedom. And, as she once proudly pointed out to Frederick Douglass, in all of her journeys she “never lost a single passenger.” Harriet Tubman, too, believed that all men and women are born free. Hence, it was worth the risk each time she made a trip to the South to gather slaves.
The opium wars was a series of 2 wars between Britain and China. The Opium was a monopoly from Britain because everyone in Britain had no money left to buy opium, so they brought it to China.