After world war II, many educated Asians and Africans questioned the nation state concept of European communal identity.
In a nation state, the state and the nation are one political entity. Since a country does not necessarily need to have a dominating ethnic group, it is a more precise definition than "country". A diaspora or refugees who reside outside the nation state may be considered part of a nation in the sense of a shared ethnicity; some nations in this sense do not have a state where that ethnicity is the majority. A nation state is merely a sizable, politically independent country or administrative region in the broadest sense.
There wasn't enough money in circulation to support a healthy economy.<span> And was a result of the bank failures that followed the stock market crash in 1929</span>
Success in trade always deals with advertisement. In this case, the spread of Islam help distribute it's teachings and beliefs making more people contribute to trade.