> I feel like most Americans are completely oblivious to the idea that other cultures might exist. I work for an American company in Europe, and most of Americans don't do any effort to learn the local language, and those who do, simply use local words to express their American thoughts.

Yeah. As a Brit living in Japan, the Americans are often a more foreign culture than the Japanese, and far less willing to work to bridge the distance and avoid misunderstandings.