Which is an area of modern industry and big cities that was once uncrowded? 1 the northeastern United States

2 the western coast of South America

3 the southwestern region of Europe

4 central Africa

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail

answer; one person; monarch;

answer; ///he could not explain why the continents drifted;