Karaj vs Nairobi

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Karaj (Persian: کرج‎, pronounced [kæˈɾædʒ] (listen)) is the capital of Alborz Province, Iran, and effectively a suburb of Tehran. Although the county hosts a population around 1.97 million, as recorded in the 2016 census, most of the 1,419 km2 county is rugged mountain, the urban area is the fourth-largest in Iran, after Tehran, Mashhad, and Isfahan. Eshtehard County and Fardis County were split off from Karaj county since the previous census.

The earliest records of Karaj date back to 30th century BC. The city was developed under the rule of the Safavid and Qajar dynasties, and is home to historical buildings and memorials from those eras. Until the second half of the 20th century, it used to be known mainly as a summer resort. Today, it is a major industrial city, with factories producing sugar, textiles, wire, and alcohol.

Source: Wikipedia

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Nairobi () is the capital and the largest city of Kenya. The name comes from the Maasai phrase Enkare Nairobi, which translates to "cool water", a reference to the Nairobi River which flows through the city. The city proper had a population of 4,397,073 in the 2019 census, while the metropolitan area has a population of 9,354,580. The city is popularly referred to as the Green City in the Sun.Nairobi was founded in 1899 by the colonial authorities in British East Africa, as a rail depot on the Uganda Railway. The town quickly grew to replace Mombasa as the capital of Kenya in 1907. After independence in 1963, Nairobi became the capital of the Republic of Kenya. During Kenya's colonial period, the city became a centre for the colony's coffee, tea and sisal industry. The city lies on the River Athi in the southern part of the country, and has an elevation of 1,795 metres (5,889 ft) above sea level.

According to the 2019 census, in the administrative area of Nairobi, 4,397,073 inhabitants lived within 696 km2 (269 sq mi).Home to thousands of Kenyan businesses and over 100 major international companies and organizations, including the United Nations Environment Programme (UN Environment) and the United Nations Office at Nairobi (UNON), Nairobi is an established hub for business and culture. The Nairobi Securities Exchange (NSE) is one of the largest in Africa and the second-oldest exchange on the continent. It is Africa's fourth-largest exchange in terms of trading volume, capable of making 10 million trades a day. It also has the Nairobi National Park with a large game reserve.

Source: Wikipedia