French line of fortification built in 1934, along the German border from Switzerland to Belgium was called?

French line of fortification built in 1934, along the German border from Switzerland to Belgium was called?

سوئٹزرلینڈ سے بیلجیم تک جرمن سرحد کے ساتھ 1934 میں تعمیر کی جانے والی فرانسیسی لائن آف فورٹیفیکیشن کہلاتی ہے؟
Explanation

The Maginot line is a defensive line in France.

It was constructed in 1929–1938.

It was a well-developed chain of fortifications for defense against the German attack during the First World War