Why did the Spanish Americas split into many countries though they had same culture?
Why the did Spanish American colonies split into many countries while the Portuguese colonies managed to stay united under a single country?
To what extent does Portugal still dominate its former colonies? Why didn't Puerto Rico ease out of the Spanish language even when it's been a United States colony for 100 years? How did Portugal become an independent country from Spain? At what point did Portuguese and Spanish become distinctly separate languages?  Why are former British colonies doing so well compared to Spanish/Portuguese/French colonies (there are exceptions, but the general trend is obvious)? How did Portugal, given its proximity, never become conquered by Spain? How similar are Portuguese and Spanish societies? How did the colonial rule influence the Latin American revolution? How did Portugal become and stay independent of Spain? What are the cultural narratives in Portuguese and Spanish histories? What non-European civilizations could have replicated Spanish success in conquering Meso-America? What did the American colonies base their declaration of independence on? Why did the American colonies declare their independence from the British Empire? How did the French Revolution influence the Latin American wars of independence? Why isn't Latin America considered a part of the Western civilization? What was the political structure in Southern Colonies? After independence, why did several Southeast Asian colonies become single-party states while India became a multi-party democracy? Why do some countries still blame colonialism for their problems when the colonists had left them decades or even centuries ago? What were the French Colonies? Why did the Dutch Empire have so little colonies in the 20th Century? When did Spain start as an unified country? If Catalonia becomes independent, would Valencia and the Balearic Islands join them or stay in Spain? Why are the former French colonies comparatively much more unstable than the British ones? Why is the British Empire not hated as much by its former colonies, unlike the Spanish, Japanese, or French empires? Why isn't the Caribbean and Latin America considered as part of the Western World? Which country did the U.S. help win its independence in return for the control of a land zone to build a canal: Panama or Cuba? How were the first English colonies in America shaped by earlier ideas about democracy and government? How did the Arab occupation of Spain influence the Spanish language? Why is Latin America called "Latin"? If Portuguese converted many people while in rule, why English people never went for conversion in their period of rule? Is Latin America a Western civilization?