Why did the south pass Slave codes ?
Since the colonial period, colonies and states had passed laws that discriminated against free Blacks. In the South, these were generally included in "slave codes"; the goal was to reduce the influence of free blacks (particularly after slave rebellions) because of their potential influence on slaves.
The answer is In Great Britain, these laws were referred to as the Coercive Acts. The acts took away self-governance and rights that Massachusetts had enjoyed since its founding, triggering outrage and indignation in the Thirteen Colonies. They were key developments in the outbreak of the American Revolutionary War in April 1775.
The sort of social turmoil come about because of the war exertion in the US is that the rowdy Hessians cost the British the support of numerous regions that the British had trusted would remain a supporter. Laborers in boomtowns confronted a lack of houses and schools. African Americans confronted racial strains. Japanese Americans were frequently detained in camps and required to take dependability promises.
Thomas Edison's first great invention was the tin foil phonograph made in Menlo Park on August 12, 1877, so that is when he first made his impact on culture and society.