Droughts and severe winters were the main problems facing western cattle barons
The Mongols. The modern Mongols, who are an Inner Asian rather than a Siberian people, are the descendants of the famed Empire Builder Chingiz (Genghis) Khan. As such, they have played a more prominent role in world history than any other people of North or Middle Asia.
Answer:
stones, soil, sand and bricks
This is an opinionated question, so points should not be affected toward your opinon. However, I believe corporations should not have loyalty to the United States because the U.S. could ban businesses from selling/sharing a product to certain countries, however I think the U.S. government should have some say in what corporations sell to other countries so that they aren't giving some random person in "who knows where" parts to make a bomb etc...
If possible I'd say all of them except the fourth one down (parts of ecosystems are independant) but if not I'd say the most valid one is the second one down (healthy ecosystems help animals)