Who is known for expanding the byzantine empire and reconquer lands that were lost after the fall of rome

The early Byzantine state. Once the Western Roman Empire fell to Germanic conquerors in 476 CE, the Eastern Empire continued on as what historians would later refer to as the Byzantine Empire. The first truly strong Byzantine Emperor was Justinian—who ruled the Byzantine Empire from 527 CE to 565 CE.

what are local authorities doing to fix the problem

explanation:

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.