People can be influnenced by their environmentagree or disgree: three points and explain
Do you mean their physical environment -- like whether they live some place hot or cold? If so, there are arguments that say that people whose culture evolves in harsh conditions are more likely to be creative and aggressive than those whose culture evolves some place tropical. The argument says that harsh conditions require people to work hard and be creative to survive whereas tropical conditions let you survive even if you just sit around and pick the fruits off the trees.
This is a very controversial idea nowadays, but it was widely believed for a long time.
There is a theory known as social reproduction that might be considered in this discussion. This theory says that people are most likely going to repeat the social patterns in which we are raised. In fact, it is theorized that it is very difficult to rise above the environment in which we are raised.
I agree that people are influenced by their environment. One example of this that I see frequently is in education. It seems that children of parents who did not finish high school are more likely to become dropouts themselves.