progressively
131Addition — is the mathematical process of putting things together. The plus sign + means that two numbers are added together. For example, in the picture on the right, there are 3 + 2 apples meaning three apples and two other apples which is the same as… …
132History of Catalonia — For other perspectives on the History of Catalonia, see History of Europe, History of Spain, History of France, Crown of Aragon, and Catalonia (historic territory). The Ca …
