D. The origin is know as the reference point. Everything you do to a function whether that’s reflecting, displacing, etc. happens starting from an origin.
King Alfonso vow to the king of Portugal that they will be good and merciful to the Portuguese and they will be granted trade privileges. Moreover, the king also allow the Portuguese to purchase slaves but they must first inform the nobleman and officials for doing so. In addition, the king worked with the Portuguese to bring Christianity to his kingdom.
Falls are the leading cause of injury and death for construction workers. Workers are most likely to fall from scaffolding, ladders, and roofs. According to OSHA, 65% of the construction industry work while on scaffolds. When scaffolds are not erected or used properly, fall hazards can occur