[[Image:|300px|Bihu dancers and drummers from Assam]]
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area (or 30% of its land area) and with approximately 3.9 billion people, it hosts 60% of the world's current human population. It is traditionally defined as part of the landmass of Africa-Eurasia lying east of the Suez Canal, east of the Ural Mountains, and south of the Caucasus Mountains and the Caspian and Black Seas.
The history of Asia can be seen as the collective history of several distinct peripheral coastal regions such as, East Asia, South Asia, and the Middle East linked by the interior mass of the Eurasian steppe.The coastal periphery was the home to some of the world's earliest known civilizations, with each of the three regions developing early civilizations around fertile river valleys. These valleys were fertile because the soil there was rich and could bear lots of root crops. The civilizations in Mesopotamia, the Indus Valley, and China shared many similarities and likely exchanged technologies and ideas such as mathematics and the wheel. Other notions such as that of writing likely developed individually in each area. Cities, states and then empires developed in these lowlands.The steppe region had long been inhabited by mounted nomads, and from the central steppes they could reach all areas of the Asian continent. The northern part of the continent, covering much of Siberia was also inaccessible to the steppe nomads due to the dense forests and the tundra. These areas in Siberia were very sparsely populated.The centre and periphery were kept separate by mountains and deserts. The Caucasus, Himalaya, Karakum Desert, and Gobi Desert formed barriers that the steppe horsemen could only cross with difficulty. While technologically and culturally the city dwellers were more advanced, they could do little militarily to defend against the mounted hordes of the steppe. However, the lowlands did not have enough open grasslands to support a large horsebound force. Thus the nomads who conquered states in the Middle East were soon forced to adapt to the local societies.
The culture of Asia is human civilization in Asia. It features different kinds of cultural heritage of many nationalities, societies, and ethnic groups in the region, traditionally called a continent from a Western-centric perspective, of Asia. The region or "continent" is more commonly divided into more natural geographic and cultural subregions, including the Central Asia, East Asia, South Asia (the "Indian subcontinent"), North Asia, West Asia and Southeast Asia. Geographically, Asia is not a distinct continent; culturally, there has been little unity or common history for many of the cultures and peoples of Asia.Asian art, music, and cuisine, as well as literature, are important parts of Asian culture. Eastern philosophy and religion also plays a major role, with Hinduism, Taoism, Confucianism, Buddhism, Christianity and Islam; all playing major roles. One of the most complex parts of Asian culture is the relationship between traditional cultures and the Western world.
Asia has the second largest nominal GDP of all continents, after Europe, but the largest when measured in purchasing power parity. As of 2010, the largest economies in Asia are China, Japan, India, South Korea and Indonesia. Based on Global Office Locations 2011, Asia dominated the office locations with 4 of top 5 were in Asia, Hong Kong, Singapore, Tokyo, London and Shanghai. Around 68 percent of international firms have office in Hong Kong. According to Citigroup in The Wealth Report 2012 stated that Asian centa-millionaire overtook North America's wealth for the first time as the world's "economic center of gravity" continued moving east. At the end of 2011, there were 18,000 Asian people mainly in Southeast Asia, China and Japan who have at least $100 million in disposable assets, while North America with 17,000 people and Western Europe with 14,000 people.
Baalbek is a town in the Beqaa Valley of Lebanon situated east of the Litani River. It is famous for its exquisitely detailed yet monumentally scaled temple ruins of the Roman period, when Baalbek, then known as Heliopolis, was one of the largest sanctuaries in the Empire.
The Toda people are a small pastoral tribe of less than 1,000 people who reside in the Nilgiri hills of Southern India. Shown here is a typical Toda hut, about 3 m (10 ft.) high, 5.5 m (18 ft.) long and 2.7 m (9 ft.) wide. They are built of bamboo fastened with rattan and thatched. The hut has only a tiny (about 0.9 x 0.9 m, 3 x 3 ft.) entrance at the front, which serves as protection from wild animals.
was a Chinese astronomer, mathematician, inventor, geographer, cartographer
, artist, poet, statesman, and literary scholar from Nanyang
. He lived during the Eastern Han Dynasty
(25–220 CE) of China
. He was educated in the capital cities of Luoyang
, and began his career as a minor civil servant in Nanyang. Eventually, he became Chief Astronomer, Prefect of the Majors for Official Carriages, and then Palace Attendant at the imperial court. His uncompromising stances on certain historical and calendrical issues led to Zhang being considered a controversial figure, which prevented him from becoming an official court historian. His political rivalry with the palace eunuchs
during the reign of Emperor Shun
(r. 125–144) led to his decision to retire from the central court to serve as an administrator of Hejian, in Hebei
. He returned home to Nanyang for a short time, before being recalled to serve in the capital once more in 138. He died there a year later, in 139.Zhang applied his extensive knowledge of mechanics and gears in several of his inventions. He invented the world's first water-powered armillary sphere
, to represent astronomical observation; improved the inflow water clock
by adding another tank; and invented the world's first seismometer
, which discerned the cardinal direction
of an earthquake
500 km (310 mi) away. Furthermore, he improved previous Chinese calculations of the formula for pi
. In addition to documenting about 2,500 stars in his extensive star catalogue
, Zhang also posited theories about the Moon
and its relationship to the Sun
; specifically, he discussed the Moon's sphericity, its illumination by reflecting sunlight on one side and remaining dark on the other, and the nature of solar
and lunar eclipses
. His fu
(rhapsody) and shi
poetry were renowned and commented on by later Chinese writers. Zhang received many posthumous honors for his scholarship and ingenuity, and is considered a polymath
by some scholars. Some modern scholars have also compared his work in astronomy to that of Ptolemy
is the capital
and the principal city of Dhaka Division
. Dhaka is a megacity
and one of the major cities of South Asia
. Located on the banks of the Buriganga River
, Dhaka, along with its metropolitan area
, had a population of over 15 million in 2010, making it the largest city in Bangladesh. It is the 9th largest city in the world
and also 28th among the most densely populated cities in the world
. Dhaka is known as the City of Mosques
and with 400,000 cycle rickshaws
running on its streets every day, the city is also described as the Rickshaw Capital of the World
rule in the 17th century, the city was known as Jahangir Nagar
. It was a provincial capital and a centre of the worldwide muslin
trade. The modern city, however, was developed chiefly under British rule
in the 19th century, and became the second-largest city in Bengal
(presently Kolkata). After the Partition of Bengal
in 1905, Dhaka became the capital of the new province of Eastern Bengal and Assam
but lost its status as a provincial capital again after the partition was annulled in 1911. After the partition of India
in 1947, Dhaka became the administrative capital of East Pakistan
, and later, in 1971, the capital of an independent Bangladesh. During the intervening period, the city witnessed widespread turmoil; this included many impositions of martial law
, the declaration of Bangladesh's independence, military suppression
, devastation during war, and natural calamities.
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