Colonial and semicolonial territories suffer the worst base environmental damage.

Evidence

It is no coincidence that places under colonial or semicolonial rule, such as the Philippines, Panama, Okinawa, and Puerto Rico, have experienced some of the worst environmental damage from U.S. bases. The same disregard for the environment that the military has shown at bases abroad has also been the case on bases in U.S. territories lacking the full protections of the Constitution. — David Vine, Base Nation_ How U.S. Military Bases…, 416

Categorization

• corroborated: 2 independent passages support this claim — David Vine, Base Nation_ How U.S. Military Bases…, 416