I find out very interesting that some researchers find that why did certain civilizations in world history seem to be more "advanced" than others. The answer to that question is related to the fact that those societies that had more access to cultural diversity were more apt to advance than their more isolated counterparts. Nowadays we have to be able to verify due to our technological advancements some neat explanations for that happening. it is said that those expositions to diversity will foster more neural connection in the brain that can be used to help solve different problems than the one who causes the neural connection to be formed, this propels the individual to be more creative and smart in regards having ideas and interesting solutions for many and different tasks he may encounter ahead.
it is being said that to teach deeper culture one has to acquire enough culture so that he can compare to new ones, or different than the one he belongs to. In fact, he can only make those comparisons if he had a frame of reference, that is his own culture. By the other hand children, exposure to stories and situation that is on their level of understanding can contribute for them to recognize a cross-cultural difference when they see one, and by consequence to deal better with the situation.