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Germany invaded France
Germany invaded Poland
Numerous groups have invaded Britain over time such as the Romans, French, and Danes.
morocco
Mongol invaded Korea around 1231.
Norway as a sovereign country has never invaded Ireland. But the Vikings of Scandinavia invaded England, Scotland and Ireland for hundreds of years.
The huns
Muslim, Magyar, and Vikings invaded Europe in the 800s.
Personally, I have never been invaded by Vikings. They did cause a bit of trouble for my Irish relations, though.
At various times in its history, Scotland has been invaded by the Irish, Vikings, Romans, English.
1066
the Normans invaded the British in 1006
The vikings
Invaded England, but were defeated.
Humans
Vikings
vikings from Scandinavia, followed by the normans from France