Yes
The Canadian National Tower in Toronto, Ontario.
Eiffel Tower, Chrysler Building, Sears Tower, Seagram Building, and the US Steel Tower
yes
100000000000000 m
Canadian National Railway Company
Canadian National Railway Company
The CN stands for Canadian National. The people who built it.
Yes
Direct quote from the Wikipedia article on the structure... "...Its name "CN" originally referred to Canadian National, t he railway company that built the tower..."
U.S. Steel Tower, also known as the Steel Building(formerly the USX Tower), is the tallest skyscraper in Downtown Pittsburgh,Pennsylvania, and the 37th tallest in the United States. Completed in 1970, the tower has 64 floors to 841 ft (256 m) and has 2,300,000 square feet (214,000 m2) of leasable space. Its original name was the U.S. Steel Building for many years before it was changed to USX Tower in 1988.
SSNIT Tower Block (Social Security and National Trust Building) About 223 feet.
The construction materials used for building the CN Tower included concrete, metals, most probably steel (cables) and wood.