19. On the American home front during World War II, by following the Double V Campaign. the Jim Crow system was banned by executive order
b. racial discrimination in employment practices ended
c. African Americans took direct action to promote racial equality
d. segregation ended in northern and western cities

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

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c. is the answer : ) (you may punch me if im wrong lol)