E. Michael Jones makes the correct observation….
By exporting a problem they could not solve, Ferdinand and Isabella saved Spain from the fate of Poland.The Jewish Revolutionary Spirit, pg. 217
The only thing I would add is that some problems cannot be solved because they were not meant to be. Diversity, especially of the insidiously subversive variety, is a Gordian Knot.
Learn the lesson of history and peacefully part ways.
The simplest solution is usually the best one.