Which geographic feature made trade in China more difficult? Oriver systems
O mountain ranges
O lowland grasses
desert oases

mtn ranges

Explanation:

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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.