I believe that answer is a because it has opposite reactions.
Answer:
What new technology did the Qin Dynasty invent? Qin Shi Huangdi also standardized written language, money, systems of measurement, and the sizes of cart axles, built the beginnings of the great wall, and expanded on systems of roads and canals.
Explanation:
Answer:Similar words
revolution
noun
1.
a forcible overthrow of a government or social order, in favor of a new system.
Similar
rebellion
revolt
insurrection
mutiny
uprising
riot
rioting
rising
insurgence
insurgency
coup
overthrow
seizure of power
regime change
subversion
sedition
anarchy
disorder
protest
strike
act of resistance
act of defiance
coup d'état
putsch
jacquerie
a dramatic and wide-reaching change in the way something works or is organized or in people's ideas about it.
Similar
dramatic change
radical change
drastic/radical alteration
complete shift
sea change
metamorphosis
transformation
conversion
innovation
breakaway
reorganization
restructuring
reformation
remodelling
rearrangement
reorientation
regrouping
redistribution
upheaval
upset
disruption
convulsions
cataclysm
shake-up
shakedown
Explanation: im sorry, that this is long.
Plants generate nitrogen in their roots
