Question

some major consequences of the first world war

Answer 1

World War I cost the participating countries a lot of money. Germany and Great Britain spent about 60% of the money their economy produced. Countries had to raise taxes and borrow money from their citizens. They also printed money in order to buy weapons and other things they needed for war. This led to inflation after the war.
Political Consequences

World War I brought an end to four monarchies: Czar Nicholas II of Russia, Kaiser Wilhelm of Germany, Emperor Charles of Austria and the sultan of the Ottoman Empire had to step down.

Social    Consequences

World War I changed society completely. Birth rates went down because millions of young men died. Civilians lost their homes and fled to other countries.

The role of women also changed. They played a major part in replacing men in factories and offices. Many countries gave women more rights after the war had ended, including the right to vote.

The upper classes lost their leading role in society. Young middle and lower class men and women demanded a say in forming their country after the war.