What is the meaning of upthrust

Which action allowed farming to be expand into west texas? a inventing a new plow b developing dry farming c increasing demand for cotton worldwide d declining of the cattle ranching industry

Why does c. wright mills identify critical thinking as one of the most important criteria for the development of intellectual craftsmanship? why is constantly being aware of the biased nature of your reactions and interactions (what c. wright mills calls self-reflexive) key to the development of that critical thinking? finally, why is keeping a file important, how can it lean to intellectual curiosity which can foster critical thinking and to develop a keen analytical mind?

Pedestrians,cyclists,skateboarders,and highway construction workers are know as?