The world and trade worldwide face a progress in globalization which is, among other factors, caused by improvements in technology, the rising trend to multicultural departments and lower labor costs. In 2009, there were 82,000 transnational corporations worldwide, thus making the understanding of multiculturalism become more important than anything else.The goal of this paper is to give a short introduction to Trompenaars model of culture, explain the dimension diffuse versus specific, compare the German and American culture and to validate this model by these chosen aspects.