The idea of getting caught frightened many to escape. There were brutal punishments for slaves who escaped and some even resulted in death. Hope I helped!
After Mary Andersonnoticed the problem street car drivers had cleaning their windshields, she hired a designer to help her design a hand operated apparatus to keep clear winshields; and contracted a company to produce it. Later she applied for an invention patent, which she obtained. Then she tried to sell her invention to the industry.
B. Native Americans who lived in the Southwest.
Checks and balances is written for the three branches of government to keep the branches power equal. So one branch couldn't do more than the other.
