Directions: Answer the given question based on the following passage:
The other major force that has been unleashed by the information revolution that lies at the core of globalization is ethnicity. Ethnic loyalties have resurfaced not only in the newly emergent nations, where the process of nation building on the European model is far from complete, but also in many older and supposedly homogeneous nations of Europe. So, widespread is this resurgence that one can legitimately ask whether ethnic groups had ever been really homogenized or whether the political and even social expression of ethnic identities have been simply suppressed in nation states that had been built through conquest and coercion.
What is the underlying idea of the passage?