How did abolitionists and free black people enslaved people escape?
they used abandoned train cars.
they used wagons and riverboats.
they used underground tunnels.
they used horses and traveled on foot.

They used horses and traveled on foot.

Explanation:

Abolitionists and free black people were instrumental to helping enslaved people escape in what was called the Underground Railroad. This consisted of a network of secret routes and safe houses. This route mostly led to the Northern States and Canada. In order to reach these areas, these people often travelled on horses and on foot, in order to attract less attention and suspicion.

i think it was   tsar alexander ii

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69