Question

(1) Many American men were drafted during World War II. (2) Many other men volunteered to serve. (3) In fact, so many men entered the armed services that professional baseball experienced a shortage of good players. (4) Philip K. Wrigley had an interesting solution to the problem. (5) He started a new league. (6) It was called the All-American Girls Professional Baseball League (AAGPBL). (7) To find good players, he scouted women’s softball clubs. (8) They were very popular at that time. (9) The AAGPBL was a hit. (10) In 1948, the year in which the league reached its high point of popularity, more than a million fans came to watch AAGPBL games. (11) The league produced many fine players, including Mary “Bonnie” Baker. (12) Dorothy Kamenshek was also a fine player. (13) After World War II ended, the AAGPBL declined in popularity. Which is the most effective way to combine sentences 11 and 12?

Answer 1

Let's take a look at the two sentences you want to combine:

The league produced many fine players, including Mary "Bonnie" baker.
Dorothy Kamenshek was also a fine player.

Both sentences are independent clauses and can be combined using a conjunction. The word, "and," means in addition or also. If you look at your sentence they both talk about the fine players of the league. So you can combine them both to avoid repetitiveness. 

The league produced many fine players, incuding Mary "Bonnie" Baker and Dorothy Kamenshek.