Directory Submission Sites are the most popular Off-Page SEO tactic to create high-quality backlinks. Submitting a valid link profile for your website requires ongoing effort and alot of patience.
The question is how & by what means, directory submission websites contribute significantly to the position of your website in Google Search Results? Directories help businesses to rank in local area.

Directory Submission Sites List
What is Directory Submission?
Directory Submission is mostly used for small businesses to grow better in local area ranking. It is the process of submitting business profiles to local directories.
For Example: If your business is located in USA, than you should go for specific USA Directories to rank in your local area.