Archaeological evidence shows that Homo erectus lived in the region now known as Myanmar as early as 750,000 years ago, with no more erectus finds after 75,000 years ago.[56] The first evidence of Homo sapiens is dated to about 25,000 BP with discoveries of stone tools in central Myanmar.[57] Evidence of Neolithic age domestication of plants and animals and the use of polished stone tools dating to sometime between 10,000 and 6,000 BCE has been discovered in the form of cave paintings in Padah-Lin Caves.[58] The Bronze Age arrived c. 1500 BCE when people in the region were turning copper into bronze, growing rice and domesticating poultry and pigs; they were among the first people in the world to do so.[59] Human remains and artefacts from this era were discovered in Monywa District in the Sagaing Region.[60] The Iron Age began around 500 BCE with the emergence of iron-working settlements in an area south of present-day Mandalay.[61] Evidence also shows the presence of rice-growing settlements of large villages and small towns that traded with their surroundings as far as China between 500 BCE and 200 CE.[62] Iron Age Burmese cultures also had influences from outside sources such as India and Thailand, as seen in their funerary practices concerning child burials. This indicates some form of communication between groups in Myanmar and other places, possibly through trade.[63] Early city-states Main articles: Pyu city-states and Mon kingdoms Around the second century BCE the first-known city-states emerged in central Myanmar. The city-states were founded as part of the southward migration by the Tibeto-Burman-speaking Pyu people, the earliest inhabitants of Myanmar of whom records are extant, from present-day Yunnan.[64] The Pyu culture was heavily influenced by trade with India, importing Buddhism as well as other cultural, architectural and political concepts, which would have an enduring influence on later Burmese culture and political organisation.[65] By the 9th century, several city-states had sprouted across the land: the Pyu in the central dry zone, Mon along the southern coastline and Arakanese along the western littoral. The balance was upset when the Pyu came under repeated attacks from Nanzhao between the 750s and the 830s. In the mid-to-late 9th century the Bamar people founded a small settlement at Bagan. It was one of several competing city-states until the late 10th century, when it grew in authority and grandeur.[66] Pagan Kingdom Main articles: Pagan Kingdom, Toungoo dynasty, and Konbaung dynasty See also: Kingdom of Ava, Hanthawaddy Kingdom, Kingdom of Mrauk U, and Shan States Pagodas and kyaungs in present-day Bagan, the capital of the Pagan Kingdom Pagan gradually grew to absorb its surrounding states until the 1050s–1060s when Anawrahta founded the Pagan Kingdom, the first ever unification of the Irrawaddy valley and its periphery. In the 12th and 13th centuries, the Pagan Empire and the Khmer Empire were two main powers in mainland Southeast Asia.[67] The Burmese language and culture gradually became dominant in the upper Irrawaddy valley, eclipsing the Pyu, Mon and Pali norms[clarification needed] by the late 12th century.[68] Theravada Buddhism slowly began to spread to the village level, although Tantric, Mahayana, Hinduism, and folk religion remained heavily entrenched. Pagan's rulers and wealthy built over 10,000 Buddhist temples in the Pagan capital zone alone. Repeated Mongol invasions in the late 13th century toppled the four-century-old kingdom in 1287.[68] Temples at Mrauk U Pagan's collapse was followed by 250 years of political fragmentation that lasted well into the 16th century. Like the Burmans four centuries earlier, Shan migrants who arrived with the Mongol invasions stayed behind. Several competing Shan States came to dominate the entire northwestern to eastern arc surrounding the Irrawaddy valley. The valley too was beset with petty states until the late 14th century when two sizeable powers, Ava Kingdom and Hanthawaddy Kingdom, emerged. In the west, a politically fragmented Arakan was under competing influences of its stronger neighbours until the Kingdom of Mrauk U unified the Arakan coastline for the first time in 1437. The kingdom was a protectorate of the Bengal Sultanate at different time periods.[69] In the 14th and 15th centuries, Ava fought wars of unification but could never quite reassemble the lost empire. Having held off Ava, the Mon-speaking Hanthawaddy entered its golden age, and Arakan went on to become a power in its own right for the next 350 years. In contrast, constant warfare left Ava greatly weakened, and it slowly disintegrated from 1481 onward. In 1527, the Confederation of Shan States conquered Ava and ruled Upper Myanmar until 1555. Like the Pagan Empire, Ava, Hanthawaddy and the Shan states were all multi-ethnic polities. Despite the wars, cultural synchronisation continued. This period is considered a golden age for Burmese culture. Burmese literature "grew more confident, popular, and stylistically diverse", and the second generation of Burmese law codes as well as the earliest pan-Burma chronicles emerged.[70] Hanthawaddy monarchs introduced religious reforms that later spread to the rest of the country.[71] Taungoo and Konbaung Main article: Burmese–Portuguese conflicts Portuguese ruler mounting an Elephant and his soldiers. Philips, Jan Caspar (draughtsman and engraver) Toungoo Empire under Bayinnaung in 1580 Myanmar (缅甸国) delegates in Peking in 1761, at the time of Emperor Qianlong. 萬國來朝圖/万国来朝图 Political unification returned in the mid-16th century, through the efforts of Taungoo, a former vassal state of Ava. Taungoo's young, ambitious King Tabinshwehti defeated the more powerful Hanthawaddy in the Toungoo–Hanthawaddy War. His successor Bayinnaung went on to conquer a vast swath of mainland Southeast Asia including the Shan states, Lan Na, Manipur, Mong Mao, the Ayutthaya Kingdom, Lan Xang and southern Arakan. However, the largest empire in the history of Southeast Asia unravelled soon after Bayinnaung's death in 1581, completely collapsing by 1599. Ayutthaya seized Tenasserim and Lan Na, and Portuguese mercenaries established Portuguese rule at Thanlyin (Syriam). The dynasty regrouped and defeated the Portuguese in 1613 and Siam in 1614. It restored a smaller, more manageable kingdom, encompassing Lower Myanmar, Upper Myanmar, Shan states, Lan Na and upper Tenasserim. The restored Toungoo kings created a legal and political framework whose basic features continued well into the 19th century. The crown completely replaced the hereditary chieftainships with appointed governorships in the entire Irrawaddy valley and greatly reduced the hereditary rights of Shan chiefs. Its trade and secular administrative reforms built a prosperous economy for more than 80 years. From the 1720s onward, the kingdom was beset with repeated Meithei raids into Upper Myanmar and a nagging rebellion in Lan Na. In 1740, the Mon of Lower Myanmar founded the Restored Hanthawaddy Kingdom. Hanthawaddy forces sacked Ava in 1752, ending the 266-year-old Toungoo Dynasty.A British 1825 lithograph of Shwedagon Pagoda shows British occupation during the First Anglo-Burmese War. After the fall of Ava, the Konbaung–Hanthawaddy War involved one resistance group under Alaungpaya defeating the Restored Hanthawaddy, and by 1759 he had reunited all of Myanmar and Manipur and driven out the French and the British, who had provided arms to Hanthawaddy. By 1770, Alaungpaya's heirs had subdued much