How did the idea of manifest destiny push the expansion of the united states into oregon california and the former mexican territories

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.

Unlike the native territory of ancient greece, the ancient roman homeland

What significance does alfred t. mahan have on expansion and imperial policies of the late 1800s?