You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Southern_Europe

Context:
For its official works and publications, the United Nations Organization groups countries under a classification of regions. The assignment of countries or areas to specific groupings is for statistical convenience and does not imply any assumption regarding political or other affiliation of countries or territories by the United Nations. Southern Europe, as grouped for statistical convenience by the United Nations (the sub-regions according to the UN), includes following countries and territories:

Question:
What is the reason for the UNO's division into regions?

statistical convenience