SKILL: INTERPRETING DIAGRAMS AND ILLUSTRATIONS In Cervantes’s novel, Don Quixote mistakes windmills for giants and flocks of sheep for armies. In Cervantes's day, windmills probably looked very much like the one shown in the illustration below. Use the illustration to answer the following questions.
A diagram of windmill mechanism. The wind pushes the windmill sails, causing them to spin in a clockwise direction. This causes the brake wheel to turn along the wind shaft, which in turn causes the great spur wheel to move, which in turn causes the wallower cogs to move. The brake, spur, and wallower wheels look like cogs in a clock; they have notches along the side that cause the cogs to spin. The wallower cog spins the grindstone, which is connected to the wallower by a shaft.

How does the illustration of this windmill differ from more modern ones you may have seen?

Many thousands of years before christopher columbus’ ships landed in the bahamas, a different group of people discovered america: the nomadic ancestors of modern native americans who hiked over a “land bridge” from asia to what is now alaska more than 12,000 years ago. in fact, by the time european adventurers arrived in the 15th century a.d., scholars estimate that more than 50 million people were already living in the americas. of these, some 10 million lived in the area that would become the united states. as time passed, these migrants and their descendants pushed south and east, adapting as they went. in order to keep track of these diverse groups, anthropologists and geographers have divided them into “culture areas,” or rough groupings of contiguous peoples who shared similar habitats and characteristics. most scholars break north america—excluding present-day mexico—into 10 separate culture areas: the arctic, the subarctic, the northeast, the southeast, the plains, the southwest, the great basin, california, the northwest coast and the plateau.