What has had more impact on history: war, trade, or disease?

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I'd have to say white people with flags

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FIFY

An example of one of each that had/has massive implications on the world. The world would be a totally different place without these

War - Augustus/Mark Antony Roman civil war

Disease - the Black Death in the Middle Ages Europe

Trade - the Silk Road from China

Religion

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There are a million examples to use for each, but which one has had the biggest impact on the history of the world?

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The problem is that these three things often impact or intertwine the others.

Trade is probably generally positive, with the occasional negative (unintended) effect. War is probably the most "neutral" of the three, in that some problems have been solved by war (Hitler, for example). Disease is probably fairly assessed as 100% bad, but other than the plague, how big of an impact has disease had on "the big picture"?

On the whole, trade probably has the greatest chronic impact on history, with disease, perhaps, coming in a distant second. On the other hand, war has probably had the most acute impact - often reshaping the map and geopolitical realities for decades or centuries to follow.

Define "impact"

Guns, Germs, and Steel

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by Shexter
Pussy, it always revolves around man's desire to get the pussy.

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This. I think 99% of all decisions men make is ultimately about this. Money, nice things, power, etc. are all tools used for the ultimate goal.... To lure the opposite sex.

It's hard to say which as they are always intertwined.

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consider not just the obvious but also other things like the massive destabilization from refugees, loss of contributions from those killed, etc.

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Well, disease does that, too. It doesn't matter if they were killed during the Crusades or in the black plague - they didn't contribute - and if they died young, before having children, they didn't contributed to successive generations, directly.

On the other hand, war tends to spur technological advancement in a far more broad-based way than disease alone, for example (and I don't dispute that diseases - particularly if you consider parasites part of the disease process - accompany almost every war, notably dysentary and lice, plus malnutrition, etc.) With war, you get improvements in metallurgy, transportation, electronics, aviation, logistics, trauma care - just a broad range of improvements.

With disease, you tend to get focused advancements in sanitation, infection protocols, vaccinations, antibiotics, etc., but rarely the boon to humanity that, ironically, war often is (rare exceptions are broad spectrum anti-biotics like penicillin and things like vaccines against smallpox).