Apart from the Spanish Armada. Thanks!

The anemic government response to the 1970 East Pakistan Cyclone, which killed half a million people and was the deadliest cyclone in recorded history, greatly inflamed public sentiment in East Pakistan and was a major influence on the East Pakistani independence movement and subsequent 1971 war, which led to Indian intervention and the creation of a new country: Bangladesh.

The West Pakistan government assigned only four aircraft to the relief efforts, for instance, and made - false - claims that India was stopping them transferring resources to East Pakistan. Sheikh Mujibur Rahman, the most prominent Begali independence leader, said: "We have a large army, but it is left to the British Marines to bury our dead." Sums up a lot of the sentiment: East Pakistanis believed, not without good reason, that West Pakistan was happy to let them die.

On the other hand, it should be noted that years of West Pakistani racism, oppressive government policies, snobbery, the useless Yahya Khan's rule, economic and political inequalities, played a greater or equal role than the 1970 cyclone. I think its probably fair to say that something had to give sooner or later, cyclone or no cyclone; Pakistan's pre-71 political setup was unsustainable.

I think something that is worth noting is that no historical events are monocausal. People have tied various wars to historical events - for instance linking Genghis Khan's conquests to droughts or ancient wars to various volcanic eruptions - but there are always other reasons that explain why states chose war and not collaboration to overcome a period of hardship. For instance, the 1970 cyclone might explain a lot of the Bengali anger that led to the 1971 liberation war, but it doesn't explain why West Pakistan didn't make more of an effort to provide relief in the first place.

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