1) Usage of Idiom "After" -
After the gold rush, the mining town collapsed. - right
Following the gold rush, the mining town collapsed - suspect
What is the problem with second sentence?
2) If two parts of the sentence are parallel, connected by a parallel marker "and"e.g ........... and .........
do the individual parts need to have the same tense as well? I have seen SC problem where tense was different for the two parts of the sentence connected by a parallel marker.
Source for (1) - MGMAT SC Guide