What Important Contributions Did Charles Darwin Make?

He combined Charles Lyell's ideas with A R Wallace's writings to find an explanation for the evolution of all living organisms as an argument against creationism (or to be pc: 'intelligent design'), these theories the scientific community generally accepted as fact in the late 1800's.
As time progresses, science continually finds more evidence to support intelligent design, further disproving Darwin's theories, but the social climate is determined to promote the non-existence of God or another form of intelligence orchestrating such design, that his contributions directly increase the world-wide division between cultural and religious based groups, effecting everything from socio-economics, to education to religion to politics.