Where can you find the tallest steel roller coaster in the u. s.?

KINGDA KA, IT IS LOCATED IN THE AMUSEMENT PARK 6 FLAGS GREAT ADVENTURE, N.Y/ NEW JERSEY. :D 

The tallest steel roller coaster is the Kingda Ka. The address is Six flags great adventure Jackson, New Jersey.

Answer(a); // soil salinization and waterlogging;

Answerbecause of improved transportation, communication, and other advantages;