Final answer:
Eolian processes are most effective in the plains states of the central United States, particularly Kansas, due to the strong winds and loose, unconsolidated sediments.
Step-by-step explanation:
Eolian processes are processes related to wind erosion, transportation, and deposition of sediment. These processes are most effective in areas with strong, consistent winds and loose, unconsolidated sediments.
Based on the information provided, the plains states in the central United States, particularly Kansas, would be the region where eolian processes are most effective. The flat, undeformed landscape and sedimentary rock composition make it easier for wind to erode and transport sediment.