Which Central American country has a population that consists mostly of Caucasian people and where Spanish is the most common language?

Costa Rica stands out in Central America as a country with a significant population of Caucasian descent, often referred to as "Ticos." This demographic predominance is largely due to the country's history of European settlement, particularly by Spanish colonizers, which has resulted in a population where people of European ancestry make up a large portion.

Spanish is the official and most widely spoken language in Costa Rica, reflecting the colonial influence on the region’s culture and communication. The country's educational system, government, and media predominantly operate in Spanish, reinforcing its status as the common language among the majority of the population.

In contrast, other Central American countries like Honduras, Guatemala, and Panama have more diverse ethnic compositions, including significant mixed Indigenous, African, and Caucasian populations, leading to a different linguistic and cultural landscape. For example, Guatemala has a large Indigenous population, resulting in numerous indigenous languages being spoken alongside Spanish.