The Humans are economic geniuses. They earn a great deal of income from taxes and trading. Through their extensive knowledge of trade, Humans are able to transport resources and goods for much less than other races can. Even the Skirineen can not match their skills.
The history of the Human race is one of conflict. Early Humans were fiercly patriotic. They spent most of their time at war with each other, but as their technology progresses there wars became more and more destructive. Despite these almost constant wars, Humans repeatedly came back stronger after when it was over. They were forged into fierce warriors by this constant cycle.
The Human's millitary strength wasn't the only thing that grew out of the conflicts. The wars brought about a need for a stable economy. They eventually channeled their aggressions into economic wars. At this point, most of their armed conflicts ceased.
The Re'lu were the first race to have contact with Humans. Starting in 1941, the Re'lu began probing Earth with telepathy beams. Unfortuantely, the Human mind was not compatible with the Re'lu. The Humans who were able to pick up the beam saw themselves being abducted onto spacecraft. When the Re'lu and the Humans first met two hundred years later on the planet Inalga VI, both races had a good laugh about the whole thing.
The Quadra Wars nearly ended the Human way of life. The Cyth, Tarth, and ChCh-t nearly crushed the Human and Re'lu forces. If not for the defection of the Maug, the Quadra Alliance would likely control the entire known universe. Thanks to the Maug's technological expertise, the tide of battle was turned and the war ended in a draw. This war truely fused the Human people together.
The biggest blow to ever happen to Human culture occured during the Skirineen Conquest. At the beginning of that war, Skirineen missiles destroyed nearly a quarter of the Earth's moon. To this day, there is still a ring of white rock that encircles the Earth.
After the Skirineen launched their devestating sneak attacked, the Humans were angered to such a degree that they absolutely refused to even consider surrender. They went so far as to create a serum that tripled their soilders' adrenaline production. The soilders are trained to take this seurm on their commander's orders. Anyone using the drug will become tremendously powerful and feel no pain, but the effects are short-lived. The aftereffects are equally impressive. Soilders who take it almost always die afterward. The stress on thier hearts is too much. The ones who survive will never fight again. It seems like an insane practice, but those desperate attacks have won more than one battle for the Humans.