Theory is the only basis we know when, where is gambling start. But most of us did not know what is the exact date when the gambling starts, where is the place surround the globe starts gambling. Because for sure before researchers determine that specific year is the start of gambling there's are many country who actually do such thing but they didn't know that is actually gambling. Maybe from the first family here in the world doing gambling .
There are several events that can not be dated in all accuracy and gambling is one of them. Fir events like this, most researchers relies on the first time it went public but that doesn't mean it haven't haven't in existence and so, they have a range kind of dating that goes from BC to AD and the 70s, 80s and what have you!
People gambled on many things and even the weather. I think that was the most form of it before gambling and other forms of gambling came up. Now, the industry has added a whole new form of sophistication to it, taxed by the government and it continues to enjoy staggering patronage.