An agreement among railroad company owners to not let prices fall below a certain amount was called a
A. trust
B. monopoly
C. gauge
D. pool

B. monopoly

Explanation:

Horizontal monopoly agreement is a form of agreement in which the various firms or companies in the same competitive industry form and arrangement to destroy or reduce competition greatly.

Hence, in this situation, an agreement among railroad company owners to not let prices fall below a certain amount is a perfect example of a Horizontal Monopoly Agreement, which is a form of Monopoly.

if you could provide the poem below, i'd be happy to you!

explanation:

you didn't give us the poem, or the title of the poem. but it is essential for you to give us that, otherwise we can not detect when the poem has a tonal shift!

i am not 100% positive but i think it is is b. both are non-partisan jobs

i am pretty sure that members of congress have term limits, can be impeached, and are nominated through direct popular vote.