Why are there so many overseas workers in the uae

In brief, the UAE's societies are tolerant to all religions, castes, creeds, beliefs, nationalities and place of birth. Workers also have better work opportunities in the UAE. It is an undeniable fact that the standard of living here is of a very high quality and all the cities in UAE, particularly Dubai, are regarded as few of the safest cities in the world!

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b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.