Refer to Where Is Niagara Falls? for a complete version of this text. In Chapter 3, people realize that building a bridge across the gorge of Niagara Falls will bring more tourists to the area.

Which detail best explains why building the first bridge to cross the gorge is such a difficult task?

“…tourists had a perfect view of some of the crazy, dangerous things some people would soon do…”

“Even at the narrowest spot, the gorge was eight hundred feet wide.”

“But there was still one thing missing—something the businessmen knew they needed.”

“A ferryboat was built to take people from the US side to Canada.”