IL.17. Geography: Understand world geography and the effects of geography on society, with an emphasis on the United States.
17.B. Analyze and explain characteristics and interactions on the Earth's physical systems.
17.B.2a. Describe how physical and human processes shape spatial patterns including erosion, agriculture and settlement.
17.C. Understand relationships between geographic factors and society.
17.C.2b. Describe the relationships among location of resources, population distribution and economic activities (e.g., transportation, trade, communications).
17.D. Understand the historical significance of geography.
17.D.2b. Identify different settlement patterns in Illinois and the United States and relate them to physical features and resources.