"City of Gold" focuses on the European explorers and how the ___ of El Dorado led them to search unsuccessfully for the city. On the other hand, "El Dorado's Gold" focuses on the tribe whose got Europeans thinking the city was real.

what is   the question

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.

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