This question calls for an opinion, at least to some extent, but I will offer one: The abomination of World War 2, coupled with the development of nuclear weapons, has so far prevented World War 3 for over 60 years.
The first half of the 20th Century saw the two most destructive wars in all history, largely due to massive changes in technology enabling all sides to kill and maul one another in increasingly brutal and imaginative ways.
World War 1 wasn't even called that until World War 2 started. Before 1939, the First World War was simply called The Great War, or sometimes The War to End Wars. Many people thought that after the unmitigated horror of 40 million casualties on all sides, unimaginably terrible conditions in the trenches, that there could simply never be another war. (Death, in a way, was the least of a soldier's problems compared with what he felt, saw, smelled and heard around the clock for four godawful years.)
But they were wrong. Germany had lost a generation of young men in WW1, just as had France and Britain, yet Germany felt a thirst for revenge, especially on the French, that could only be quenched by throwing away another generation of young men. And even though Germany had a lower birth rate than France, in 1940 the French Army pretty much gave up without a fight and there stood Adolf Hitler astride most of Europe, striking at the Soviet Union and seriously threatening to take over the whole world!
Japan wanted to hold the power over all of Asia, so they struck at China in 1931 and eventually struck at us in 1941. I think it's fair to say that between them, Germany and Japan wanted to at least rule their respective halves of the world. Had they won, sooner or later they'd have been at each other's throats.
It took a lot of hard fighting and, frankly, a lot of luck to beat Hitler in Europe and the Japanese on the other side of the world. There were about 40 million casualties in WW1. It's estimated that WW2 cost between 50 and 60 million DEAD. That's not including the wounded, maimed and missing.
The Germans were only beaten when they were crushed between allied armies coming at them from east and west. They only quit after Hitler killed himself. The Japanese wouldn't quit until the U.S. dropped two atomic bombs on them. Up until then they'd been arming women and children with sharpened bamboo sticks to fight the Americans on the beaches!
After WW2 ended, the Soviets got The Bomb, too, and the Cold War started, so called because there wasn't nearly as much shooting as there had been in WW2. There was Korea, of course, and Vietnam, and the Wars of Partition in Palestine and India and a whole host of other little "brushfire" wars costing a few thousand lives here and there, but nothing on the scale of 60 million dead.
It's been 62 years since the end of WW2. Do you think enough time has passed for us to have forgotten the lessons? We've had nuclear showdowns but never a nuclear war; do you know that there are people in high military places who speculate whether humans could survive one? The little brushfire wars continue to take a few thousand lives here and there, but what if a big wind comes up and whips up the flames and a little brushfire becomes a world wide forest fire? What then?
There have been good things that came out of the war. I think the space race was a good thing. It started with ballistic missiles to hurl explosives at each other, but evolved into human exploration, which comes naturally. There are always unintended consequences of all human endeavor, but in the long run I think it's good. Computers are good. They came in part out of the necessity to compute fall of shot in artillery duels; now we have the internet and I can write answers to questions (right or wrong - your choice). The internet fuels discussion and human interaction. It also provides a place for those who would spew hatred and malice. But I'm a believer in freedom of speech. I resist censorship, even of the malicious haters. They can be countered by free thinkers. The proof of the theory of Plate Tectonics came out of WW2 in the process of antisubmarine warfare. Israel came out of WW2 as a direct result of the Holocaust. I think both are good, although I wish Israel would make allowances for a Palestinian homeland. If the Jews deserve a homeland of their own, so do the Palestinians. Both have suffered endlessly.
But I do worry that, as we get farther and farther away from the horrors of a really big war that we could get into another one. We see in Iraq and Afghanistan what the troops suffer: Improvised explosive devices tearing off arms and legs ... explosively formed penetrators able to go through the depleted uranium armor of even an Abrams tank - and we watch it go on, helplessly, day after day, and no one seems to know how to stop it. What if a wind comes up ...?
Good for their day. Obsolete today.
One of my students (aged 8) asked me today why is World War 2 always written with roman numerals? I don't know the answer but what a great question! Please help.
The total direct and indirect cost of World War I was 337 billion dollars. It proved to be the costliest war to date at the time.
In terms of what?
Second World War i.e. World War II
it has no effect
Well if it doesnt effect you then no.
I am not being facetious: The biggest effect of World War I was World War II.
couse and and effect of first world war
It helped win the war
World War 1 affected England and Germany.
what effect does George clemenceau have on the world today
Military spending was drastically cut as a side effect of the cold War. World affairs are still influenced today from the Cold War.
we ate poopsicles for months after world war two
a dominoe effect resulted in world war one
cause: more than 10 countries to be at war Effect: U.s. is feared around the world