This reference apparently alludes to the precarious political scenario following the collapse of MISC@1 and Sunga dynasties in northern LOCATION@1 and its occupation by foreign hordes of the Shakas , LOCATION@2 , PERSON@1 and Pahlavas .

This seems to mean the situation after the MISC@1 and Sunga dynasties fell apart and northern LOCATION@1 was occupied by foreign armies of the Shakas , LOCATION@2 , PERSON@1 and Pahlavas .
