are you asking for the 800s or the 1800's(assuming you had a typo? i'll answer both anyways)
In the 800's, Charlemagne was crowned king by the pope, and Europe was under attack by all sorts of surrounding tribes, like the Vandals, Goths, Angelo-Saxons and more. It was a war zone. In the 1800's, the economy grew, and there were more labor. More Europeans entered America and brought unknown diseases. I guess it was Europe's Industrial revolution.
It's like a war zone ;
In the 800s, Europe faced instability due to significant invasions, particularly from Vikings, Magyars, and Saracens. Charlemagne emerged as a key figure, working to unite Western Europe under a centralized Christian rule. The period also saw the development of feudalism, which shaped social and economic structures.
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