132 SECTION II GROWTH FROM THE GRASSROOTS, 1930-1934 Baltimore, then, in 1930, was a major metropolitan area, a constituent part of the great urban chain of the northeastern United States, located on the southernmost border of that chain. At its core, Baltimore was comprised of a dynamic, expanding industrial-commercial region and a city with distinct legally- drawn boundaries; while the two greatly overlapped, they were by no means identical. Also, this urban core existed in a particular symbiosis with a system of hinterlands that were divided into virtual Northern and Southern zones. Internally, the urban region of Baltimore was a web of communities of varying characteristics, traditions, and institutions. Underlying this web of communities were contradictory, evolving structures of class, race/ethnicity, and gender that, ultimately, were the key determinants of the shape and course of the social struggle in the that region. The Crash occurred at a time when the level of social struggle in Baltimore was low and the popular forces largely demobilized. Therefore, for the social movements of Baltimore, the period of 1930 through 1933 was a period of rebuilding from the grassroots up - rebuilding within a structural context that had evolved for decades and which was experiencing profound and complex dislocations as the Great Depression advanced.