The answer is D. 1.3 billion
the picture that shows a plain is 4
In a time before railroads and highways, the Great Lakes and St. Lawrence River served as the primary transportation system. Many of North America's largest cities were established along the waterway as commerce flourished between their ports. Today, Great Lakes-Seaway shipping is equally important.
The answer is Rwanda gaining independence. Belgium granted Rwanda independence in 1962.
I think its Igneous rocks that are volcanic formed from malten material
