A semicolon separates two or more independent clauses joined without a coordinating conjunction:
The Court required police to warn suspects of their constitutional rights; in doing so, it made judicial history.
"Semicolons and Independent Clauses." Grammar.com. STANDS4 LLC, 2017. Web. 16 Jan. 2017. <http://www.grammar.com/semicolons-and-independent-clauses>.
It’s now more important than ever to develop a powerful writing style. After all, most communication takes place in reports, emails, and instant messages.