With Savoy split in the 16th century between France and Switzerland, its foothill region southeast of the Alps, Piedmont, had come into the Italian orbit.
This expanded Italy's total size by 5%.
mnli hypothesis: This expanded Italy's total size by 5%. premise: With Savoy split in the 16th century between France and Switzerland, its foothill region southeast of the Alps, Piedmont, had come into the Italian orbit.