In every country, history taught in school is a combination of history and patriotism, they emphasize the good and downplay the bad. For example, in the U.S., they don't mention the Japanese internment camps. Or our history covering Indians, originally we were friends and even shared our food with them at a thanksgiving, then you skip over to those sneaky savages attacked an American hero at Little Big Horn. We don't mention about their societies, or how when we settled lands, the Indians were drove off the lands. But since it is obvious that we displaced them, we learn about Little Big Horn to say the Indians did not like us and it was for our survival.