We now know that continents move approximately 2 cm per year. How do we
know/measure this?

to accurately measure the movement of the continents — more than 1 inch (2 centimeters) per year. ... About 4.55 billion years ago, matter condensed and then collided in a huge gaseous nebula, eventually creating the rocky bodies we now know orbiting ...

Explanation:

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.

deflation   hope this