Yes, indeed, there is a way WWII could have never happened. Simply by thinking about what could have prevented the causes for WWII in the first place, we can give an answer to this. And how could WWII be prevented? With international cooperation.
Woodrow Wilson’s call to create the League of Nations and its epic failure is a great allegory to explain why WWII exploded. Negligence and indifference from the States involved in the international scene were what prompted turmoil in Europe. A harsh Treaty of Versailles that sunk Germany into debt and economic and social crisis was only allowed by a bunch of countries that weren’t looking forward the future of Europe; or even the world. The policy of isolationism taken by the United States at the end of the war, which emphasized on not intervening in European affairs any more, prevented the United States from joining the League on Nations, weakening it considerably and leading it to its dissolution. With a strong punishment, and no way nations could cooperate as a whole (the League of Nations) the battleground was set for a greater conflict.
As Germany sunk in crisis, other countries started recovering from the wounds of war. This gave Germany an image of an underdeveloped country, or even worse, of a criminal receiving its punishment. Being seen as the enemy, and also being helpless, drove Germany to seek a quick turn table. The conditions created by the International community made the Nazi party so appealing to people. Let’s consider how German society felt after being named the responsible for the worst war ever. If someone told them that Germany is great and shouldn’t be treated as a criminal, they would believe him or her immediately. A nationalistic feeling brewed into a chauvinism that not only praised German race but also scorned any other race. This is why Hitler made it to power. If anyone named Hitler the real problem that caused the WWII, still the International Community’s indifference and indolence are the responsibles. Who else created the conditions for Hitler to rise? It isn’t Germany who put those harsh sanctions to itself.
There was a chance for WWII to be avoided? Yes, there was a way. But it engaged international cooperation and action. It required nations to be thoughtful about Europe’s development, and that no nation can fall without carrying Europe along. This is homologous to what is happening right now with the Eurozone Crisis and Greece. It required nations to collaborate to heal the wounds of a post-conflict society instead of isolating from each other. This is homologous with the Middle East, where the Arab Spring brought so many changes and there were so little responses from the Arab States. It required international action in the moment Germany violated the Versailles Treaties by invading neighboring countries. It is homologous to the uncountable international law violations made by Israel against Palestine in the Occupied Palestinian Territories.What was missing before WWII is still missing today. Perhaps the international community hasn’t learned that talking without moving is useless. That imagining a better world without doing anything is talking to a wall. That walking up to a podium to call for cooperation without really engaging won’t solve anything. They say the pen is stronger than the sword, but when it comes to people being killed, to societies suffering, a pen will only be useful to sign the obituary.