A search engine is a program that searches/identify items in a database which corresponds to keywords specified by the user. A meta search engine is an online information retrieval tool that uses data of a web (search English) and that makes its own results. A subject directory is a service which offers a collection of links to the internet which is posted by creators. Hope this helped!
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Because blacksmiths were important. They provided people with a variety of metal tools, and fabricated weapons for war. They also constructed household items. They not only created these tools, but they also repaired and maintained them.
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the answer should be 'This is'
