Which one of the following cases is not ethnocentric?

A、England defined the world's meridians with itself on the center line, and longitude continues to be measured in degrees east or west of Greenwich.;
B、The United States has traditionally conceived of itself as having a unique role in world history.;
C、Willy Brandt knelt down at the monument to victims of the Warsaw Ghetto Uprising in December 1970.;
D、null