किसके शासनकाल के दौरान देवगिरि का नाम बदलकर दौलताबाद कर दिया गया था?

Which of the following agricultural land taxes was collected during the Delhi Sultanate?

Which Sultan was criticized by chronicler Ziyauddin Barani for appointing low-born and non-aristocratic people such as cooks, barbers, and gardeners to high administrative posts?