Ans: The Fugitive Slave Act of 1850 was passed by Congress as one provision of the Compromise of 1850. The harsh terms of the act angered many Northerners and contributed to the sectional division over slavery that led to the American Civil War.
The correct answer is Malaria
Malaria was a huge problem since it couldn't be treated and people mostly died from it. It prevented numerous explorers from venturing into places like Africa where Malaria was running rampant due to the huge amount of mosquitoes. When it was discovered, it enabled numerous people to live at ease because they could not live with the disease or prevent getting it.
