In Europe, the arrival of the farmers who replaced Mesolithic hunter-gatherers happened in force 9,000 years ago but it was happening elsewhere prior to that. In Syria, there is even evidence of scientific trait selection in grains in 10,000 B.C. but in other parts of the world agriculture came much later.
A region in sub-tropical China which did not have agriculture until the arrival of domesticated rice from elsewhere may have gotten agriculture prior to that - as far back as 3,000 B.C., according to a new paper.