The sentence starts with the history showing how the growth of civilization depends upon nature. So the next sentence in sequence will be statement R as it shows how the ancient communities produced food. Also, all other option carries a pronoun. So, the preceding statement will have a noun. R being the next statement makes all other options invalid. Thus, the correct sequence is RQSP.
?Instead? is used as an alternative or substitute and is not relevant in this context. ?Nevertheless? will be used as it means ?inspite of that?. Thus, the correct formation would be, ?This scooter is not as efficient as it used to be; nevertheless it is still a very useful machine.
?Were? needs to be replaced with ?was? to make the sentence grammatically correct. This is because, ?If the subjects are joined by as well as, with, along with, together with, and not, in addition to, but, besides, except, rather than, accompanied by, like, unlike, no less than, nothing but, led by, headed by, guided by, controlled by,governed by,etc.. Then the verb will agree with the first subject. Thus, the correct formation would be, ?The teacher as well as his wife was invited?.
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