Vintage photos show Venezuela before its economic collapse, when oil wealth made it one of the world's richest nations

Venezuela underwent major economic and social changes in the mid-20th century.

Jack Manning/Getty Images

• Venezuela, home to the world's largest oil reserves, was once among the world's richest nations.
• Years of economic collapse drove one of the largest mass migrations in recent history.
• Now, the US has signaled that American oil firms could help revive Venezuela's oil production.

Half a century ago, Venezuela was one of the world's richest nations. Today...