Billionaire is someone with net worth of at least one billion units of a currency. As of April 2024, there are 2,781 billionaires worldwide with $14.2 trillion combined wealth. Forbes publishes annual global U.S. dollar billionaires list
Social inequality occurs when resources are unevenly distributed within society. Factors like power, religion, race, gender influence access to social goods. Social inequality can be linked to economic inequality and natural resources
Social class divides people into hierarchical categories based on education, wealth, occupation. Three main classes: upper, middle, and lower. Class is not fixed but varies by society and historical context
Nouveau riche refers to newly wealthy individuals who gained wealth within their own generation. Term dates back to ancient Greece (8th century BCE). Term "novus homo" (new man) had similar connotations in Roman Republic
HDI ranks countries based on life expectancy, education, and income indicators. Developed by Mahbub ul-Haq for UNDP's Human Development Report Office. Ranked from 1 to 69 in 2022, with Norway leading 16 times
Brazil is the largest country in South America with over 203 million people. It is the fifth-largest country by area and seventh-largest by population. Brazil has 26 states and a Federal District with the capital Brasília. Portuguese is the official language and Brazil has the most speakers worldwide