What caused the disappearance of land bridges?

During the 1960s, how did the neural movement promote the chicano movement

Woodrow wilson called the supreme court "a constitution convention in continuous session." what did wilson mean by this?

This is a picture of workers in a factory. why was this picture most likely taken? to advertise that kids could get jobs to expose the horrors of child labor to show pride in children at work to show that night workers were needed o