Final answer:
The Niagara River flows from Lake Erie to Lake Ontario, passing through Niagara Falls. It is split in two by Goat Island.
Step-by-step explanation:
The river that flows from Lake Erie to Lake Ontario, forming part of the boundary between the United States and Canada, is the Niagara River. It is known for its iconic Niagara Falls, which consists of three main waterfalls: Horseshoe Falls, American Falls, and Bridal Veil Falls. The majority of the water flow comes from Horseshoe Falls, making it the most powerful waterfall in North America.
Goat Island is located in the middle of the Niagara River, splitting it into two sections. The river flows from Lake Erie to Lake Ontario, passing through the falls along the way.