I'm no archeologist to prove to you that it came from this place. But you can refer to well-known archeologists. In layman terms, because you are so thick-skulled, whatever is posted on Wikipedia is moderated, especially when it comes to Buddhism, which is a sensitive topic for millions of people. So, it is not me and few Indians who claim it's from India, but millions of Buddhists who take the pilgrimage to Lumbini, or Bodh Gaya.
Why not? He was sitting in the exact place and that's why Mahabodhi tree is important in Buddhism. Leaving a lifestyle means you are abandoning it. Buddha didn't preach his kshatriya lifestyle. That's what it is in Lumbini.
Now that you are an oxymoron who asks for proof for the existence of Buddha. Your issue is pathological. Take it this way, there was no reason for Buddha to write it down, it was his disciples who spread it to Magadha. Ashoka came more than 100 years later. Even during that time, Buddha was revered and worshipped in Bodh gaya. What Ashoka did was preserve the tree (which was destroyed many times after him).
Buddha was doing Yoga though. Surprise? All the archeological excavations show Buddha in yogic position. Also, the correlation between Buddhist texts and sculptures from Ashoka were all in Prakrit.
Buddy, you need to get some help. In one line you claim you have no idea how Shakya looks, second you claim they should look like East Asian. Even Nepali people do not look like East Asian.
Do you want to know how Shakya look? Just look at which region they were part of at the time. They were not part of East Asia or even Tibeto - Burman region. They speak the same language as rest of India. Language has strong correlation with ethnicity. East Asia had no Indio-aryan language. Please prove me otherwise.
Or at least a minute relation between the Chinese and Sanskrit language which proves the exchange of people at the time.
My comment is not based on assumptions. while your entire point is with assumptions and not to mention hate. Just cant accept fact.
While Chinese infested their food with frigging opium. LOL
http://www.bbc.com/news/world-asia-china-35381169