What did the germanic trides do to the borders of Rome?

The Germanic tribes, particularly during the late Roman Empire, significantly challenged and altered the borders of Rome. As they migrated and invaded, they pushed into Roman territories, leading to the establishment of various Germanic kingdoms within former Roman lands. These incursions weakened Roman control and contributed to the Empire's fragmentation, ultimately playing a key role in its decline. The tribes' movements also prompted Rome to fortify its borders, leading to the construction of defensive structures like the limes.