I am working on an English assignment called Wordy Sentences, and there are a few I do not understand. Any help I can get with this sentences, I would really appreciate it.

Instructions: Edit each sentence to eliminate wordiness.

1. Ninth-century caliphs of Baghdad actually took it upon themselves to establish a translation center where Greek scientific manuscripts were translated into Arabic.

2. Just simply keeping these manuscripts in use and ascertaining that copies were available would have been a remarkable achievement for the medieval Islamic world.

3. Al-Razi, a man known to Westerners as Rhazes, succeeded in treating patients suffering from such diseases as scabies, measles, and kidney infections.