Geographic Luck

I believe that Jared Diamond's theory on geographic luck is very accurate and understanding. Many other people believe that the answer to why some civilizations are stronger and more advanced than other can't be that simple, there must be more to the answer. Geographic luck is when a civilization has all the right climate and land to grow crops. The civilization is also lucky to have the right kinds of animals to help fertilize crops, make milk, clothing and food. These civilizations also need the right surroundings such as bodies of water. I do understand why many people don't believe his theory. I am still questioning why every other civilization could trade and spread their ideas with others when New Guinea has stayed almost the same for years. Animals from Africa were moved to America, why can't they get moved to New Guinea too? Crops from America we traded to Africa, why can't they be traded to New Guinea?