Our country, Philippines is home to many different languages, dialects, and sub-dialects. Although the official language of the Philippines is Filipino (based on Tagalog), there are over 170 dialects spoken throughout the archipelago which consist of more than 2100 islands.
Guam a small island has its own national dialect called Chamorro.
Philippines and Guam were both under the colony of the Spaniards for 300 years which greatly affected our Language. But early settlers before the Spaniards came like Indosia, China and other neighboring islands have influenced the diversity of our Language. English is the official Language for both Guam and Philippines.
How many Language your country have?
Do you believe the story of Tower of Babel in the Bible?
Different languages comes about when we considered social factor. No one is born with a language, but later on in life, he or she develop a language socially; they begin to speak the language of the people in their social environment. I hope when we try to answer, why people speak different languages;dialect, we base our argument on the first language of a child; mother tongue. Anyone can learn speaking any language provided he or she interacts with people who speaks that language.

Thank you Hillary, any back up or reference for your answer?