Parallelism: combining sentences

Just want to make sure I got these right. Required to combine each sentence using parallel structures.

1. Old English ran from about 600 to about 100. Middle English ran from about 1100 to about 1500. Modern English ran from about 1500 to the present.
--> Old English ran from about 600 to about 1100, Middle English from 1100 to 1500, and Modern English from 1500 to the present.

2. The Modern period is sometimes divided. The first Modern perios is Early Modern beginning in 1700. The second Modern period is Late Modern. It began in 1700 and continues to the present.
--> The Modern period is divided into Early Modern, which began in 1700, and Late Modern, which began in 1700 and continues to the present.

3. Some of the most common words in use today have their origin in Anglo-Saxon. Old English is Anglo-Saxon. One of these words is the. Another is man. Another is mother. Another is and.
--> Some of the most commonw ords in use today have their origin in Anglo-Saxon, or Old English, and they are the, and, mother, and man.

4. Middle English dates from the Norman conquest of England in 1066. Middle English was strongly influenced by the French-speaking Normans.
--> I thought this could not be put into parallel structures.

5. Thousands of French words entered the English vocabulary during this period. Many of them are among our most common. One example is beef. Another us music. Another is nice. Another is flower.
--> With thousands of French words entering the English vocabulary during this period, our most common are beef, music, nice and flower.

6. Modern English is characterized by changes in pronunciation. Sea for example, once rhymed with hay. Moon, for example, once rhymed with loan.
--> Modern English is characterized by changes in pronunciation, for sea and hay and moon and loan once rhymed.

Thank you for your help. I appreciate it!!!!!!!!!!!!!!!