Mature or adult would be your answer.
Answer:
"Without innovations in food production, the factories could not have grown so quickly. The trend quickened after 1860 and continued throughout the 21st century as well."
Explanation:
Because in the previous sentence it already stated the same thing. (PS I probably got this wrong)
Answer:
If you could link it that would be easier.
Explanation:
A; the other answers don't tell you any real extra information about what other words in the sentences are/mean.
