Why was the Gupta period considered the "Classical Age" of India?

The Gupta period is called the Classical Age because it witnessed outstanding achievements in several fields. Art and architecture reached new heights (for example, at the Ajanta Caves), Sanskrit literature produced masterpieces, and science and mathematics advanced through scholars like Āryabhaṭa. Political stability and economic prosperity during much of this period allowed culture and learning to flourish, leaving a lasting legacy.