What roman achievements were lost during the dark ages? economic advances of roman influence architectural styles of the romans economic advances of roman influence and the architectural styles of the romans educational and governmental advances of roman influence

A

Explanation:

they lost everything they had ever worked for including literature and much much more so it has to be A

there are hundreds of postives ways to unite a country with another country here are a   few

1 peace treaty's peace treatys

are basically a document signing a allliance with one country and another.

2 gift

what i mean by this is for example how the french gave the americans the statue of libery a gift of peace.