Human

Humans are native to Earth, and are very intelligent and cunning. They make up for their lack of physique with incredible stamina and wits. The advancement of agriculture and technology led them to total dominance over their planet, at least until The Merge brought forth species as developed as they were.
There are estimated to be around 2 billion humans on Earth in the year 1900; thus they vastly outnumber all the other intelligent races now on earth.