The Civil War produced a number of technical innovations. One of the following was not used in this war. A.Mines B.Tanks C.Submarine D.Observation Balloons Answer and Feedback Answer:B do you want? view more test Xem thêm Share this post Some other questions you may be interested in. Where is Echo Canyon located? What is the capital of the state of Nevada? What is the state tree of Idaho? What was the 33rd US state admitted to the Union? What is the state motto of Arizona? What is the state bird of Colorado? According to the legend, leprechauns are unfriendly Irish fairies who live alone, possess hidden pots of gold and pass the time making what? In Ireland, the shamrock, a three-leaved white clover, is a sacred plant which symbolizes what? What are the two official national languages of Ireland? What is the main ingredient in Boxty cakes, a traditional Irish dish?
