Which form of democracy works only on a local level?

Direct democracy  (also known as pure democracy) is a form of democracy in which people decide policy initiatives directly. This differs from the majority of modern Western-style democracies, which are indirect democracies.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.