Which two sentences describe the state of europe after the war?

germany was held responsible for the war and had to pay other countries for their losses.
millions of people had been killed using new technologies that had been invented during the war.
britain had been destroyed by trench warfare and spent many years rebuilding damaged buildings.
the allied powers stationed an army in germany to prevent it from attacking france and russia in the future.
the relationship between france and germany improved, and the two countries formed a military alliance.