"Once upon a time in" joke

Once upon a time in the Kingdom of Heaven, God was missing for six days.
Eventually, Michael, the archangel, found him, resting on the seventh day.
He inquired of God, "Where have you been?"
God sighed a deep sigh of satisfaction and proudly pointed downwards
through the clouds. "Look, Michael, look what I've made." Archangel Michael
looked puzzled and said, "What is it?"
"It's a planet," replied God, "and I've put Life on it. I'm going to call
it Earth and it's going to be a great place of balance."
"Balance?", inquired Michael, still confused.
God explained, pointing to different parts of earth. "For example, northern
Europe will be a place of great opportunity and wealth while southern
Europe is going to be poor; the Middle East over there will be a hotspot.
Over there I've placed a continent of white people and over there is a
continent of black people," God continued, pointing to different