Simplify the following text for a Grade 14 native English-speaking person.
Original: Inheriting a collapsing empire and faced with constant warfare during his reign against both the Seljuk Turks in Asia Minor and the Normans in the western Balkans , Alexios was able to halt the Byzantine decline and begin the military , financial , and territorial recovery known as the `` Komnenian restoration '' .
Simplified: The military , financial and territorial recovery of the Byzantine Empire known as Komnenian restoration began in his time .