According to Passage 1, why was building the castle difficult work?
The workers often disagreed about the
best way to build the structure.
The workers had never before built a
structure that was so large.
The workers had to do everything
Without the help of machines.
The workers lacked enough materials to
do their jobs property.

where is the

you shopuld find your answers here if you need more. the answer is the infinite variety of human nature

  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.