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:
Gamal_Abdel_Nasser

Context:
Nasser played a significant part in the strengthening of African solidarity in the late 1950s and early 1960s, although his continental leadership role had increasingly passed to Algeria since 1962. During this period, Nasser made Egypt a refuge for anti-colonial leaders from several African countries and allowed the broadcast of anti-colonial propaganda from Cairo. Beginning in 1958, Nasser had a key role in the discussions among African leaders that led to the establishment of the Organisation of African Unity (OAU) in 1963.

Question:
What African group did Nasser help to form?

Organisation of African Unity