Social history can be closely related to cultural and environmental history, and classes are often a historical science subdiscipline that emerges as an attempt to better understand marginalized social groups. Studies often include strategies to analyze various communities, cultures and social classes.

Spain, officially the Kingdom of Spain, is a sovereign state and a member state of the European Union. It is located on the Iberian Peninsula in southwestern Europe. Spanish universities regulate access to their degrees, and they fix the academic fees. They can also offer unofficial postgraduate degrees. Madrid has the largest number of bars per capita of any European city and a very active nightlife.