What can you infer about continents on opposite sides of the same mid-ocean ridge?

The large connected urbane area from boston to washington, d.c. is often referred to as

1) name any two states which are leading producer of cotton textile in india 2) wht information technology 3) name any two countries which are leading producers of cotton of cotton textile 4) wht is add to pig iron to convert it into steel

Which continents lie only in the northern hemisphere