How did the department of defense analysis that was leaked as the pentagon papers affect the nixon administration?

Which areas where seperated by the iron curtain

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

Which of these is not a criticism of the concentric zone model? it does not accurately describe cities after the rise of suburban development. it only applies to cities that grew after the development of the automobile. it assumes that inner-city areas will always be repurposed instead of abandoned. it places too much importance on the traditional central business district.