Select the factors that made travel on a steamboat dangerous. pirates on the river hidden obstacles in the water collisions swift currents changing channels native american attacks

The factors that made steamboat travel dangerous were  hidden obstacles in the water, that could provoke sinking if the boat was harmed badly and Native American attacks, that were common at that time and ended up in very violent ways.

the factors that makes traveling on a team boat are:

Explanation:

pirates on the river is a very dangerous factor because it is easier to attack a steam boat than a big ship hence pirates target steam boats a lot  on rivers especially commercial steam boats.

swift currents changing channels: this swift currents can change the direction of a steam boat swiftly without recourse and this might lead to the boat driver losing control of the boat and eventually capsizing in some cases

Hidden obstacles in the water colliding with a boat might cause a boat to capsize as well.

c)an idealized view of nature. hope this

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27