How did the battle of the marne expand the war beyond a regional struggle? the french were forced to use trench warfare.
the stalemate between german and french troops was ended.
the germans began to use poison gas as a weapon.
germany's plan for an easy french defeat was ruined.

Germany's plan for an easy French defeat was ruined. The Battle of the Marne, it is also known as Miracle of the Marne has resulted in a victory to German Armies and made them their alley. It was in early 1914. It is a hostile amid World War I by the French armed force and the British Expeditionary Force (BEF) against the propelling Germans who had attacked Belgium and northeastern France and were inside 30 miles (48 km) of Paris.

The answer is a hope