Why was it such an achievement for someone to circumnavigate the globe?

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?

Why are people in history willing to fight in conflicts against a more powerful oppressor?

The form the boundary between north and south china. a. himalayan mountains c. change river b. xi river d. qinling shandi mountains