Which statement summarizes the central idea of the article? The Louisiana Purchase greatly changed the United States geographically and economically.
The Louisiana Purchase had very little impact on the culture and politics of the United States.
The Louisiana Purchase opened up trade along the Mississippi River for the first time in US history.
The Louisiana Purchase strengthened ties between the United States and both France and Spain.

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Neighborhood and community characteristics: the social ecology approach emphasizes the view that certain social and physical characteristics of neighborhoods and communities influence the likelihood of committing deviance and crime.imagine that you are in a position as a community leader. there are several neighborhoods in your community with: high poverty rates low quality housing single parent households which issue would you address first, and what strategies would you propose to address this issue?