Answer:
The painting is Philip IV on Horseback by Diego Velazquez, an equestrian portrait done in order to portray the power and the greatness of the leader.
Step-by-step explanation:
The name of the artwork is Philip IV on Horseback or Equestrian Portrait of Philip IV and it was painted by Diego Velazquez.
Equestrian portraits are the types of paintings that present a portrait of the person on the horse. They were often done for royals and high standing people, sometimes presenting them in a battle.
The reason why they were so prominent in history is that they should portray the power and the glory of the leader. It was thought high-class people look especially powerful while on the horse. It would make them look taller, in charge, and ready for the action and the battle. They are supposed to emphasize the greatness of the ruler.