use comma before the conjunction in a compound sentence.

If two parts of a compound sentence are not joined by a conjunction,use a semicolon to separate the parts.
rewrite the passage below, correcting all capitalization and punctuation mistakes. Combine any sentences you find appropriate.

Everyone knows that necessity is the mother of invention. The woman who invented disposable diapers was both a woman and an inventor. Marion Donovan invented the disposable diaper in 1950, she used a regular cloth diaper, lined it with pieces cut from a shower curtain, and called her invention " Boaters" since no company was interested in marketing her new invention, Mrs. Donovan founded her own company. Today disposable diapers are big business.

Did I do this ok?

2 answers

This needs a lot of work.

"Marion Donovan invented the disposable diaper in 1950, she used a regular cloth diaper, lined it with pieces cut from a shower curtain, and called her invention " Boaters" since no company was interested in marketing her new invention, Mrs. Donovan founded her own company."
Combine them into a compound sentence using one of the coordinate conjunctions. Write a compound sentence using correct punctuation and capitalization.