1.The weimar republic was not very well recieved by its own people.
2.The peace treaty at Versailles was a harsh and humiliating peace.
3.The allied powers held the new Weimar republic responsible for the problems the allied armies faced during the war.
4.The weimar republic had to pay the war reperations amounting to 6 billion pound.
5.Germany lost its overseas colonies ,1/10th of its population etc.
The weimar republlic got collapsed because when after the war allied countries won there has to be a treaty signed by the germany that waz a vry hrsh nd humiliating treaty which wz known as the treaty of versailles.....there waz a devastating impact of the war people became deptors from creditors....economic crises were there that is why that republic got collapsed means dropped down by these disasterous happening.......