What river in northeastern France was the scene of the battle when the French army stopped the German advance toward Paris in 1914?

Answer 1

The German advance on Paris was stopped in September 1914 on the River Marne. By then the plan worked on painstakingly by the German General Staff was in tatters. Soon both sides extended their lines from Switzerland to the sea, and began about four years of trench warfare. On the Western Front the fighting turned into a war of attrition.
The Marne River
Marne river.

"The Marne River was the site of two battles during the First World War. The first battle was a turning point of World War I, fought in 1914. The second battle was fought four years later, in 1918."