The lightness allowed the tank to traverse unsupported bridges which would be unable to take heavier tanks, and it's small size allowed it to travel along the long winding and narrow roads at that time.
The lightness allowed the tank to traverse unsupported bridges. These unsupported bridges would be unable to take heavier tanks. It's small size allowed it to travel along the long winding at that time. It's small size allowed it to travel along narrow roads at that time.