Describe the steps that led to the completion of the panama canal

here are locks at each end to lift ships up to Gatun Lake, an artificial lake created to reduce the amount of excavation work required for the canal, 26 metres above sea level, and then lower the ships at the other end. The original locks are 33.5 metres wide. A third, wider lane of locks was constructed between September 2007 and May 2016. The expanded canal began commercial operation on June 26, 2016. The new locks allow transit of larger, Post-Panamax ships, capable of handling more cargo.

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