An African American man drinking at a water container with a sign labeled 'Colored.' © akg-images / Universal Images Group/Image Quest 2013

The policy of segregation illustrated in this image taken in 1939 was determined to be

constitutional in the case of Plessy v. Ferguson in 1896
unconstitutional in the case of Plessy v. Ferguson in 1896
unconstitutional by the case of Brown v. Board of Education
constitutional by the case of Brown v. Board of Education

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

warfare was the primary means of cultural transmission in both regions.