Final answer:
Empanadas are famed Argentinian pastries known for their semicircular shape and diverse fillings, highlighting the influence of cultural exchanges in culinary traditions.
Step-by-step explanation:
The filled semicircular fried or baked pastries referenced in the question are known as empanadas, which are a staple in Argentinian cuisine. The empanada is a popular Latin American dish with various fillings, often including meats, cheese, vegetables, or fruits, encased in dough and then fried or baked. While similar dishes can be found worldwide, empanadas hold a special place in the hearts of many in Argentina, reflecting the country's cultural and culinary diversity. Evolving from the Arabic savory pastries brought to Spain, empanadas were subsequently adopted in the Spanish colonies. The technique of making dough wrapped around savory or sweet fillings can be traced back to early culinary practices, much like the Middle Eastern 'sambusak' or 'samosa' from the Indian subcontinent, and the concept was eventually brought to Latin America.