Why were the events of 1453 in Constantinople, and the Treaty between Spain in Portugal in 1494 significant events in "American history?

wait history, who want to talk about history, boring.

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.