Through multiple revolutions people have adapted to and affected their environments. As civilizations settled, new advances in agriculture and tools were made to allow for a less-nomadic society. Through advances such as iron tools and food stock, civilizations settled creating the basis for large empires to come later. Also through the innovation of weapons and armor, empires were able to better control and defend larger territory allowing for exponential expansion. Finally, with new advances made by different civilizations, trade increased as demand for new products from other empires grew.
Answer:
A,b,c
Explanation:
too much plowing of the grasslands causes light soil which was picked up by the high winds in order to cause the dust bowl
District court,Appeals court, and Supreme Court.