I got a question for you: The Liberal government of Prime Minister Lester B. Pearson in 1965 first established the Canadian Pension Plan.

Based on this passage, when did the old age pension start in canada?
Let's think first:
The relevant sentence in the passage is: The Liberal government of Prime Minister Lester B. Pearson in 1965 first established the Canadian Pension Plan.
Therefore, the answer is 1965.