Answer:
D ....................................
Explanation:
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Mechanical reaper 1834
Sewing machine 1830
Railroad 1830
Spinning Jenny 1770
revolutionise the process of cotton spinning
Cotton gin 1793 machine for cleaning cotton of seeds
Steam engine 1698. heat engine that performs mechanical work
Steel process 1856
Light bulb 1879
Radio waves 1895
Fixed wing planes 1799
Model t car assembly/line 1908
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Answer:
Oxens were more reliable and tougher than mules. They will eat poor grass. Oxen were very strong and could haul fully-loaded wagons up ravines or drag them out of mudholes. A large wagon needed at least three pairs of oxen to pull it.
Explanation:
