Refer to Where Is Niagara Falls? for a complete version of this text. Which responses are main ideas presented in Chapter 3? Select the two correct answers. In 1848, ten dollars was considered to be a lot of money. Bridges bring more tourists and help businesses grow at Niagara Falls. People could be fined for galloping their horses while crossing bridges. By 1845, Niagara Falls had become a major tourist attraction. A person tries to shoot a cannonball across the gorge at Niagara Falls.