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:
Space_Race

Context:
Meanwhile, the USSR continued briefly trying to perfect their N1 rocket, finally canceling it in 1976, after two more launch failures in 1971 and 1972.

Question:
Which year did the USSR cancel the N1 rocket program after two failures that didn't launch?

1976