Answer: Similar problems afflict cities throughout the region. Slums spread over larger and larger urban areas. Often unemployment and crime increase. In addition to social problems, there are many environmental problems. These include high levels of air pollution from cars and factories.
Nations being wealthy is very important so they can keep up their economy and support citizens citizens. They also need to have strong Military and that requires money
he conquered many European kingdoms and fought off invaders is how did Charlemagne gather together many of the former Roman empire European territory's