The fact that so many nations, and that so many people all around the world believe in God, simply shows that their differences are mistakes based on the fact that they don't have clear info about God. They are looking for and believing in God, because God makes sense. Machines are made by someone. The universe is a machine of machines. God is the Maker of the universe.
I am my fish's God.
Before me there was no pond/fish/world in my garden,
On the 1st day I formed/dug their wrold,
On the 2nd day I lined their world with sand/earth
On the 3rd day I created/added their water
On the 4th day I created/added their plants
On the 5th day I created/added the fish
On the 6th day : i rested because I am more efficient that the human god
on the 7th day I moved on becoming my dog's God.
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Joke aside, I would't find hard to believe that some kind of advanced civilization (call it Alien / God / whatever) "dropped" on earth some human 10 000 - 15 000 years ago
This could be explaining the missing link between Lucy / Monkeys / modern humans
You are looking at things in too small of a way.
God, whatever He is, lived in His own Kingdom (which is way beyond anything that we can think of as a universe), before He created the backdrop (space) for the universe. The universe is simply a project of His. He started by making what we call empty space... nothing. There wasn't even any such thing as "before" for Him, until he made the space-time continuum.
People are His major creation. And to show us how much greater He is than we are, He made microbes, that don't really have anything like a mindset, yet live in and react to the world, and inside of us. As we are greater than microbes, God is greater than we are, only more so.
There is no link between Lucy, Monkeys, and modern humans in the way of evolution. God made them all as they are, except for breeding and adaptation to circumstances. Like begets like.
To think that life is different is foolish. There is not one clear example in nature that shows this. There are a lot of people who say there are many examples. But they don't have proof that evolution actually happened. And simple change, like-begets-like and adaptation without evolution fits better than evolution theory evolution.