In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

what is required in building?, Context: Building first evolved out of the dynamics between needs (shelter, security, worship, etc.) and means (available building materials and attendant skills). As human cultures developed and knowledge began to be formalized through oral traditions and practices, building became a craft, and "architecture" is the name given to the most highly formalized and respected versions of that craft.
available building materials and attendant skills