I wonder whether there would be also other options, but one very important aspect is the smog: the city center is where many industry-relevant things meet: the factories are all around it, transport, cars... and since it is surrounded by bad air, the air takes longer to dissipate. This is especially visible if the city is in a valley, such as Mexico city foe example.
Answer:
Because of this alliance, Germany and Italy were called the Axis Powers. EX: During this time, Great Britain and France did little to stop him, choosing instead to follow a policy of appeasement. EX: By signing the Munich Pact in September 1938, he acquired the Sudetenland, a German-speaking region of Czechoslovakia.
The Egyptian Pyramids is one example of a construction made of large stones. HOWEVER, The question seems that there should be pictures included, but there is not. So I give an example to help however I can, Feel free to comment and give more context if you wish for further help.
The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States; but all Duties, Imposts and Excises shall be uniform throughout the United States.
Answer:
A photography contract is there to protect both parties: the photographer and the client. It also ensures that everyone agrees on the basic elements of the job. This written document helps to outline expectations on both sides.