Which industry did not exsist in the US until the second industrial revolution

Iam a word that means to bring to fields and crops

(05.04 mc) how did the roman transportation system keep the empire strong? plz

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio river.