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What are backlinks?  

Backlink drawpeople to your website  who might not have otherwise discovered your content. the people who click throught to your site from another website are also predisposed to trust whatbyou have to say. They were viewed as trustworthy, and thatwebsite voched for your site by linking to you, therefore, the people who land on your page will be more include to eagage with what your have to say. Building backlinks can also offer poerful ammunition for SEO.

Google works to understand how the various website fit together and which onescustomer will likely view as trustworth. Backlink help  them butter understood which brands other sites view highly enough to link.