Who designed the first suspension
bridge across the Niagara Gorge ?
What does kite-flying have to do
with the bridge's construction ?

Charles Ellett designed the bridge.

The initial link between the Canadian and American sides was established by a you man named Homan Walsh, who won a contest to fly a kite from one side to the other. The kite string was fastened to a tree on the American side, and cords of increasingly larger sizes were attached on the Canadian side and pulled across, culminating with a wire cable that marked the beginning of the bridge. You may read about this at the link below.

http://www.iaw.com/~falls/bridges.html

Correct !

Thanks for the answer Fuse !