It looks as if there is no hair-splitting difference between 'one' and 'about'. At best, one may say one may use statistics 'on' something to make a temporary or casual reference wile statistics 'about' a deeper study.
However, this question is more about 1. whether we use the parallel a clause to the underlined ' how they survived economically' on the other side of the conjunction or/and 2. the use of the appropriate verb to match the singular 'absence'.
However, this question is more about 1. whether we use the parallel a clause to the underlined ' how they survived economically' on the other side of the conjunction or/and 2. the use of the appropriate verb to match the singular 'absence'.
.jpg)
