During the holy roman empire, germany's rhine river was a major trade artery (and provided tax revenue). the numerous castles along the rhine were toll stations, and most merchants had to travel sizable lengths of the river to arrive at their destination. although the emperor's closely guarded the right to charge a toll, local nobility would occasionally break the law and build a castle along the rhine to charge a toll (hence the origin of the phrase "robber baron"). when possible, such "robber castles" were destroyed to prevent the tragedy of the commons. what is the commons resource here?

Why did separate government develop in ancient greece?

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.

1. how did conditions in germany and europe at the end of world war i contribute to the rise and triumph of nazism in germany? 2. how did the german government under nazi rule build support among the german people? 3. how did nazi germany gradually isolate, segregate, impoverish, and incarcerate jews and persecute other perceived enemies of the state between 1933 and 1939? 4. how did the nazis lead germany to war in europe and, with their collaborators, kill millions—including systematically murdering six million jewish people? 5. why is learning about the holocaust important? so we don’t repeat history.