I believe it was around 3500 BC.
The way that these issues influenced exploration and colonization in the U.S was that their exploration was fueled by the desire to obtain more wealth, ,more power, and to spread their religion. European nations established colonies in the U.S for this reasons.
The ancient Egyptians believed that the soul does not fully detach from the body and that in order to live in the afterlife, the body must be preserved in the best way possible.
