The rest of the class agreed
with Santos.
Is this proper English

No it isn't correct English

Yes.

Explanation:

It has 2 subjects and a predicate.

Subjects: Rest of the class and Santos

Predicate: Agreeing with Santos

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a-he encouraged islamic schools to introduce greek texts.

d-he invited greek scholars to teach their texts to the locals.

explanation:

the transmission of the greek classics to latin western europe during the middle ages was a key factor in the development of intellectual life in western europe.[1] interest in greek texts and their availability was scarce in the latin west during the earlier middle ages, but as traffic to the east increased so did western scholarship.

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