How did Charles Darwin's evolutionary theory challenge people's religious beliefs?

Charles Darwin was born on February 12, 1809 in Shrewsbury, England. His father, Robert Darwin, was a physician, the son of Erasmus Darwin, a poet, philosopher, and a naturalist. Charles's mother, Susannah Wedgewood Darwin, died when he was only eight years old.
At age sixteen, Darwin left Shrewsbury to study medicine at Edinburgh University. repelled by the sight of surgery performed without anesthesi, he eventually went to Cambridge University to prepare to become a clergyman in the Church of England. After receiving his degree, Darwin accepted an i...