Is Latin America one or several regions?

For years now Latin America has made attempts to group into regional blocs that will allow for a stronger economic consolidation and a higher influence on the rest of the world: Mercosur, Celac, Alba, Unasur. They all try to portray Latin America as a strong and solid region. A region that thinks and acts as a group.

Is this really true in practice? Are we so united in Latin America to talk about one region? Are we guided by one common interest?

And Brazil, does it view itself as part of Latin America or as an independent region? Does it use Latin America as a springboard for it’s international business?