Answer:
The middle east is culturally United as there are many different religions and beliefs within it. The 3 main religions in the middle east are Judaism, Christianity and Islam. This shows unity of the 3 religions. However the middle east could also be culturally divided as there is war and conflict going on currently in countries like sirya. This is also shown when women in Iran are expected to wear a hijab and not leave the house without a male. This could lead to some deaths as well as injuries as a form of punishment in these countries is being stoned to death. Arabs Kurds and Persians are seen as the same type of people just from different countries. Overall I personally think the middle east is culturally United and culturally divided.
The United States became a major Industrial power in the late 19th century as the country grew in size and population.
Local demand for new cities, infrastructure, railroads made the United States into the world's largest steel producer.
Eventually, this new growth slowed down, as the country became developed and open trade with other countries meant it could import cheaper steel.
China is going through a similar path of growth, seeing rapid urbanization and growth of new cities and railroads. The local demand alone has turned China into the world's largest steel producer and a major exporter.
Eventually, we can expect this demand to gradually cool off and China loose this status as the world's largest producer of Steel.
As the country surges towards a more service-oriented economy, it might start importing cheap steel as well.
It is not 100 percent sure but approximately it takes 20 years to build the great wall of china that is one of the seven wonders of the world.
It was build about 200 years ago.