Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Knowledge World History Russian Revolution
Which among the following lines, the Germans retreated in 1917?
1
Durand Line
2
Maginot Line
3
Hindenberg Line
4
More than one of the above
5
None of the above