St. Lawrence Seaway ships bypass Montreal economic dominance

The St. Lawrence Seaway let ships bypass Montreal

The seaway opened in 1959, allowing ships to bypass Montreal. As businesses moved elsewhere, Montreal lost its long-standing economic dominance.

More oxygen helped complex animals, but cannot explain them alone

More oxygen may have helped larger and more complex animals meet their energy needs and build hard body parts. But meter-long organisms already existed before the Cambrian explosion. Rising oxygen alone therefore cannot explain the later burst of animal diversity.

Japan's army leaders accepted surrender terms

The atomic bombings of Hiroshima and Nagasaki, together with the Soviet invasion of Japanese-held Manchuria, persuaded previously adamant Imperial Army leaders to accept the Allies’ terms.

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St. Lawrence Seaway ships bypass Montreal economic dominance

The St. Lawrence Seaway let ships bypass Montreal

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