Answer:
Russia had the largest army and German had the largest navy
Constantinople is the major city in the eastern Roman Empire
Mining things such as gold and copper in the west created a large influx of immigration to the west thus boosting the economy there.
Answer:
Islam spread successfully among groups historically located in agriculturally poor regions featuring few pockets of fertile land and in countries characterized by unequal land endowments. It was in these areas that the Islamic institutional arrangement proved appealing to the indigenous populations.
