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.
Martin Luther was inspired to launch the Protestant Reformation while seated comfortably on the chamber pot. That cannot be confirmed, but in 2004 archeologists discovered Luther's lavatory, which was remarkably modern for its day, featuring a heated-floor system and a primitive drain.
Answer:
First off the railroads allowed people to be transported from one city to another in half the time from them walking. This allowed families to see each other and friends to visit. However one problem was how African Americans were treated they were sat in different train cars because of their skin color making a huge drift between whites and African Americans. Nature was affected because trees had to be removed to build the railroads and many forests suffered because of this. Not to mention the smoke from the trains which would pollute the air. Hope this helps.
Explanation:
Epic Poetry,They glorified knighthood and Chivalry, tournaments and battles