Final answer:
Spanish is an official language on four continents and is the mother tongue in 20 countries, including its presence in regions of Americas, Africa, and formerly in Asia, reflecting its global distribution.
Step-by-step explanation:
The question relates to the geographical distribution of the Spanish language. Spanish is an official language on four continents and is the mother tongue in 20 countries. This shows the widespread prevalence of Spanish around the globe, due to historical colonization and the spread of cultures.
In Americas, Spanish is the dominant language in most of South and Central America, except Brazil where Portuguese is spoken. It's also an official language in Equatorial Guinea in Africa and Spain in Europe. Moreover, in Asia, Spanish was an official language in the Philippines until the late 20th century. The United States, while not having an official language at the federal level, has a significant Spanish-speaking population, with Spanish being the second most spoken language. Countries like Ecuador, Peru, and Bolivia, also feature a variety of indigenous languages in their rural regions.