Where is the largest population concentration in the Western Hemisphere in the interior of Mexico
along the Brazilian coast
on the northeast U. S. and southeast Canadian seaboards
in the southern half of California

On the northern United States and southeast Canadian seaboards

modern sasaram city covers the largest sub-metropolitan area of bihar. it has many famous religious and historical spots and is surrounded by the scenic kaimur mountain range and rivers like sone and kav. sasaram city is situated in the middle of many industries.

explanation:

answer; (d) melting of sea ice;