World War I: Essay bitte korrigieren

Hallo, ich soll in Englisch ein essay mit mindestens 150 Wörtern schreiben. Könnt ihr das grammatikalisch und falls nötig auch inhaltlich korrigieren? Ein besser ausformulierter Schluss und noch ein paar Sätze zum Ablauf des Krieges wären optimal. Ich weiß nicht wie ich das noch weiter in englisch beschreiben soll.

Vielen Dank

The first World War lasted from 1914-1918. A lot of countries were involved in it. Germany, Austria-Hungary and three other countries fought against eleven countries in total. The biggest of them were the USA, Great Britain, Russia and France. The problems between these countries were mostly caused by militarism, nationalism and imperialism. Another cause was the Prussian war, where France lost Alsace-Lorraine to Prussia. With the loss of their land, tension was created and Austria-Hungary sent an ultimatum with very harsh terms to Serbia, which was almost impossible to accept. So they had no other choice then start a war. Within a week, Russia, Belgium, France, Great Britain and Serbia also declared war on Austria-Hungary and Germany . The USA remained neutral at first, but later joined the war in the second battle of marne. They successfully pushed back the Germans with a counteroffensive. By fall 1918 Germany had a lot causalities and had to give up.