Why was the Chilkoot Pass such a challenge?

There was a high risk of avalanche along the Chilkoot Pass, as snow storms were frequent and the snow could give way and speed down the summit. The wet and heavy snow of the avalanches could kill 50 to 100 men at a time.

Explanation:

#1 im pretty sure its a.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.