Pro-European is a subjective term applied to a person who supports the idea of European unification (mainly through the European Union (EU)) and generally supports further 'deepening' of European integration, specifically in the context of political argument over the current and future status of the EU and its policies.

Many pro-Europeans believe that strength in unity is particularly important in today's multipolar world. They argue that a united and independent Europe has become increasingly necessary, while a politically divided one would bring disadvantages in many areas, including the economic, cultural, political, social, scientific, diplomatic and military arenas. A major argument is the relative small size and importance of the individual European countries with respect to the current and rising powers on the world scale. The individual countries, they argue, would then have limited geopolitical influence and would be unable to represent their own interests effectively. On the other hand, a united Europe, with a population and an economy larger than that of the United States, would make a viable partner, or competitor, whose opinion and interests would be taken into account on the world stage.

The term black people is used in some socially-based systems of racial classification for humans of a dark-skinned phenotype, relative to other racial groups represented in a particular social context. Different societies apply different criteria regarding who is classified as "black", and often social variables such as class and socio-economic status also play a role, so that relatively dark-skinned people can be classified as white if they fulfill other social criteria of "whiteness" and relatively light-skinned people can be classified as black if they fulfill the social criteria for "blackness" in a particular setting.

As a biological phenotype being "black" is often associated with the very dark skin colors of some people who are classified as "black". But, particularly in the United States, the racial or ethnic classification also refers to people with all possible kinds of skin pigmentation from the darkest through to the very lightest skin colors, including albinos, if they are believed by others to have African ancestry, or to exhibit cultural traits associated with being "African-American". As a result, in the United States the term "black people" is not an indicator of skin color but of socially based racial classification.