Passage: During the Great Depression of the 1930s, most countries abandoned the gold standard. With widespread high unemployment, devaluations became common, a policy that has frequently been described as "beggar thy neighbour", in which countries purportedly compete to export unemployment. However, because the effects of a devaluation would soon be offset by a corresponding devaluation and in many cases retaliatory tariffs or other barriers by trading partners, few nations would gain an enduring advantage.

Question: when did most countries let go of the gold standard?
During the Great Depression of the 1930s