Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Knowledge Medieval History Delhi Sultanate
The Delhi Sultanate policy of 'internal frontier' meant
1
keeping a check on internal rebellions
2
conflict over hereditary rights to appoint successor
3
cutting down forests to consolidate the hinterlands
4
More than one of the above.
5
None of the above