GMAT Sentence Correction (SC) | Re: In the sixteenth century, the push for greater precision in

In the sixteenth century, the push for greater precision in measuring time wasnot, like more recently, motivated by complicated philosophical questions about the nature of matter and the universe, but the practical matters of navigation : sailors simply needed more highly accurate timepieces in order to compute their longitude form the positions of the stars.

Lets break sentence into clauses:

In the sixteenth century,
the push for greater precision in measuring time was not, like more recently,
...

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