Why were oracle a major part of peoples' lives in certain cultures thousands of years ago ?

Explanation:

Oracle bones provide us with one of the earliest examples of writing in Ancient China. They also have given historians useful information about the Shang dynasty. Oracle bones were usually made from the shoulder blades of oxen, or sometimes the shell of a tortoise was used. They were used to divine the future.

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what is a theme?

ans: the implicit idea of a written work of literature is called a theme.

so, the only theme of "birdfoot's grampa" by joseph bruchuc is that as a human being one should always remember the value of every life on earth.

the grampa is stopping the car again and again to save those little toads from washing away in the heavy rain is an act of kindness and humanity.