The adoption of Christianity would later become a major influence in the development of a common German identity .
In Roman - held territories with Germanic populations , the Germanic and Roman peoples intermarried , and Roman , Germanic , and Christian traditions intermingled .
The adoption of Christian would later become a major influence in the development of a common German identity .
In Roman - held territories with Germanic populations , the Germanic and Roman peoples intermarried , and Roman , Germanic , and Christian traditions intermingled .