What steps might people have taken to prevent genocide? Provide examples of those steps.

Which genocide? There were many. That's the worst part of human history- - war and genocides.

The first major problem is hatred. Someone hates someone else. The side doing that hating always has the power to create a genocide. There isn't much that you can do about that: people hate and they have the power to indulge their hatred. There is nothing that can persuade people not to hate. The way to fight it is, sadly, to let the genocide happen.

Usually when people think of genocides, they think of the European one between 1942 and 1945 in Nazi Germany. The war had been going on for just about 3 years before the Wannsee Conference took place in January of 1942. By then Germany was beginning to weaken and people accepted easily that the Jews were somehow at the bottom of loosing the war. The Jews were certainly credited with being at the bottom of the loss of WWI. Still, there was nothing that could be done. Hitler's Propaganda was more easily accepted once Germany's casualties began to mount.

Prior to the Wannsee Conference, Madagascar was suggested as a possible relocation place for the Jews. The high ranking German officials rejected this, especially when Madagascar began to fall to the allies in beginning in May of 1942.

The death camps had their birth in this background.

The doors closed to the Jewish people in Great Britain, in the United States and in every other location they could have gone to.

I hate to be a pessimist, but once the ground work was laid, nothing could prevent a the German Holocaust. There are no steps that could be taken because no one fully disagreed with German Policy.