Putting Latest Posts back in Widgets after deleting

[Alvin63]

Ok so I removed some of the things on the sidebar after having a sidebar ad - that I didn't think were used. New Posts was one of them as most people use "What's new" at the top. A member asked me to put the "Latest Posts" widget back, but I've deleted it. How do I get it back please?!
Putting Latest Posts back in Widgets after deleting

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