From the 19th century on, they were forced to move northward or were settled into agricultural villages.

Then it starts to move northward at a constant speed.

Next towers four through nine collapsed to the west, twisting clockwise, as the tornado started to move northward.

Due to rising temperatures, organisms move northward to reach slightly colder temperatures to track the environmental niche they are adapted to.

Some populations may have tried moving northward, but not in large enough numbers to take hold.