Crusades impacted Europeans.
First, they increased cross-country trade
For goods feudal epicureans
Delighted in that Asians made.
Second, their knights were catalytic
In breeding hate, anti-Semitic,
Which led to Hitler’s killing Jews
And still feeds people’s racist views.
Third, Ferdinand and Isabella,
With all their knights, reconquered Spain
And drove Islam across the main
Which finally helped out that brave fella,
Columbus. In conclusion, you
Descend from 1492.