After the crusades, the class that grew powerful was the class.

upper, middle, lower

How did inovations in manufacturing lead to improvments in transportation?

How did industrial production improvements impact export-dependent areas of the world during the great depression?   a.  demand for certain raw materials rose.      b.  demand for certain raw materials fell.      c.  the new technology was exported to most raw material producing nations.      d.  there was a decrease in tariffs.

Who was marshall mcluhan and what did he have to do with communication theory?