Yes it did
There are about 19 Millions Sikhs in India which cover about 2% of India's population.
Rome did not have a globalising empire because this empire did not cover the whole globe.
None. Muhammad died long before the rise of the Ottoman empire. If you mean Mehmed the Second, one of the sultans of the Ottoman empire, he was the one who conquered Constantinople and made it the new capital; renamed Istanbul. He expanded the empire to cover almost all of Serbia as well as including Anatolia & the Crimea.
europe
it is true
2
There is no connection between the Aztec Empire and the Persian Empire. They did not know of each other's existence.
You will not find the majority of population going in for wearing beach cover ups in India. However, beach cover ups is slowly and slowly getting popular amongst the newer generation and people buy kaftans and sarongs as beach ups in India. The new fashion brands like TwistnWraps (selling through their website wwwtwistnwrapscom, who mainly deal in beach cover ups in India have vastly contributed towards the increase in the popularity of beach cover ups in India.
The Sahara could almost cover the United States. At the rate it is expanding it will not be long before it may be able to totally cover the country.
Iran
New York
It depends on the time period. At some point their empire stretched from western india, the northern parts of africa, and the lower halves of europe. They persians conquered Spain, and stayed in control for a while. You have to look at specific Persian rulers to see how much land they owned.