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Thailand was discovered by the Western world in 1511, when Portuguese missionaries began to arrive.

Discovered is not the word you should be looking for you don't discover a country that has existed for hundreds of years When was it first visited by non asians would be a better question. It was first visited by Europeans primarily the Portuguese as was much of Asia at that time due to Portugal's dominance of ocean trade. The Kingdom of Siam (Thailand-Free People) was founded about 400 ad by Burmese and Chinese. The city of Chaingmai was a separate kingdom until the 16th century

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15y ago

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