Semicolons to Separate Main Clauses

Use a semicolon to separate main or independent clauses when a coordinating conjunction is not used, as in the following example:

The environment is more than an issue; it is the context in which all issues occur.

Remember, if you use a comma alone to connect independent clauses, you will create an error called a comma splice.

Which sentence is correct? Deciding to go on vacation together was easy, agreeing on a destination proved more difficult. Package deals make travel to exotic places affordable; you will have to do some comparative shopping to find the best rates.