<prompt> Translate the following text to EnglishBaada ya miaka mingi ya mapambano, jeshi la Waarabu lilijenga ngome kubwa, au Al-Qasar, juu ya vilele vya Madrid, na kuongoza bonde la Manzanares.  <response>: Over centuries of struggle, the defending Moorish army built a full-scale fort, or Alczar, on the heights of Madrid commanding the Manzanares valley. 