Which of the following is a requirement for all u. s citizens over 18? A. serve in the military
B. Attend a public school
C. respond when summond to jury duty
D. apply for naturalization

c. respond when summoned to jury duty

Explanation:

First, no one can be forced to go to the military, unless they reinforced the draft.

Second, when a u.s. citizen turns 18 they no longer legally are forced to attend school

Last, naturalization is for non citizens trying to become u.s. citizens

Therefore that leaves you with c

(I hope that helped)

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.