Select the factors that made travel on a steamboat dangerous.

Native American attacks
hidden obstacles in the water
changing channels
pirates on the river
swift currents
collisions

swift currents, hidden obstacles in the water and collisions

4 copper and gold, the california gold rush is why im pretty sure.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.