I am told kudzu was imported to this country in order to help with erosion, particularly in the southern states. Seldom has a plant found a new home it liked so well and flourished so fast.
No one seems to know where the first vines were transplanted; did they spread south to north, east to west or what? Eventually they creeped all over much of the South, covering anything in their way.
Soon the problem became how to control or eradicate the stuff. Pull it, burn it, poison it or just ignore it, it doesn't ever go away. The only way around kudzu is to pave over it, and I suspect when the pavement comes up, the kudzu comes back.