What would you chang in the last 1,000 years and how?

If I could change anything in the last 1,000 years I don't know what it would be. I could say I wanted to chane the world wars or some other big war, but the truth is without those wars we wouldn't have the tecnology we have now. We might still be like we were hundreds of years ago because fighting has pushed us to have greater ideas and greater movments. So I think if I could change anything I would change the meanness man has had twords animals. Animals have been always loyal and there for us. They help plow feilds and cary us places. It seems we forget all the greatness they have done for us, many animals have carried not only their own weight but ours, too. Not to manchen all the things we carrie along with us. I understand people need to kill animals to eat. But when you start to take more than need, thats just unnesasary.
I don't know how I would start to change it. I guess I would go back in time and try to protect the Natives that cared for the animals and only took what they needed. I would stop angry people from eating more than they need, then I would come back and try to stop people from eating to much now so people after us would get to see the beauty of the animals in there natural enviorment. Because it is truly amasing to see animals running free.