Chandragupta II in the context of "Gupta Empire"

Kumaragupta I was Gupta emperor from 415 until his death in 455. A son of the Gupta king Chandragupta II and Queen Dhruvadevi, he seems to have maintained control of his inherited territory, which extended from Gujarat in the west to Bengal region in the east.

Kumaragupta performed an Ashvamedha sacrifice, which was usually performed to prove imperial sovereignty, although no concrete information is available about his military achievements. Based on the epigraphic and numismatic evidence, some modern historians have theorized that he may have subdued the Aulikaras of central India and the Traikutakas of western India. The Nalanda mahavihara was possibly built during his reign.

The Indo-Scythian Kingdom, also known as Indo-Sakas, were a group of nomadic people of Iranic Scythian origin who migrated from Central Asia southward into the Indus Valley region of present-day Pakistan and also regions of Afghanistan, Eastern Iran and northern India. The migrations persisted from the middle of the second century BCE to the fourth century CE.

The first Saka king in the subcontinent was Maues/Moga (first century BCE) who established Saka power in Gandhara, the Indus Valley, and other regions. The Indo-Scythians extended their supremacy over the north-western subcontinent, conquering the Indo-Greeks and other local peoples. They were apparently subjugated by the Kushan Empire's Kujula Kadphises or Kanishka. The Saka continued to govern as satrapies, forming the Northern Satraps and Western Satraps. The power of the Saka rulers began to decline during the 2nd century CE after the Indo-Scythians were defeated by the Satavahana emperor Gautamiputra Satakarni. Indo-Scythian rule in the northwestern subcontinent ended when the last Western Satrap, Rudrasimha III, was defeated by the Gupta emperor Chandragupta II in 395 CE.

The Western Satraps, or Western Kshatrapas (Brahmi: , Mahakṣatrapa, "Great Satraps") were Indo-Scythian (Saka) rulers of the western and central parts of India (extending from Saurashtra in the south and Malwa in the east, covering modern-day Sindh, Gujarat, Maharashtra, Rajasthan and Madhya Pradesh states), between 35 and 415 CE. The Western Satraps were contemporaneous with the Kushans who ruled the northern part of the Indian subcontinent, and were possibly vassals of the Kushans. They were also contemporaneous with the Satavahana who ruled in Central India. They are called "Western Satraps" in modern historiography in order to differentiate them from the "Northern Satraps", who ruled in Punjab and Mathura until the 2nd century CE.

The power of the Western Satraps started to decline in the 2nd century CE after the Saka rulers were defeated by the Emperor Gautamiputra Satakarni of the Satavahana dynasty. After this, the Saka kingdom revived, but was ultimately defeated by Chandragupta II of the Gupta Empire in the 4th century CE.

The Vakataka dynasty (IAST: Vākāṭaka) was an ancient Indian dynasty that originated from the Deccan in the mid-3rd century CE. Their state is believed to have extended from the southern edges of Malwa and Gujarat in the north to the Tungabhadra River in the south as well as from the Arabian Sea in the west to the edges of Chhattisgarh in the east. They were the most important successors of the Satavahanas in the Deccan and contemporaneous with the Guptas in northern India.

Little is known about Vindhyashakti (r. 250–270), the founder of the family. Territorial expansion began in the reign of his son Pravarasena I. It is generally believed that the Vakataka dynasty was divided into four branches after Pravarasena I. Two branches are known, and two are unknown. The known branches are the Pravarapura-Nandivardhana branch and the Vatsagulma branch. Gupta Emperor Chandragupta II married his daughter into the Vakataka royal family and, with their support, annexed Gujarat from the Saka Satraps in 4th century CE. The power vacuum left by the Vakatakas were filled by that of the Chalukyas of Badami in the Deccan region. The Vakatakas are noted for having been patrons of the arts, architecture and literature. They led public works and their monuments are a visible legacy. The rock-cut Buddhist viharas and chaityas of Ajanta Caves (a UNESCO World Heritage Site) were built under the patronage of Vakataka king, Harishena.

The Udayagiri Caves are twenty rock-cut caves near Vidisha, Madhya Pradesh primarily denoted to the Hindu gods Vishnu and Shiva from the early years of the 3rd century CE to 5th century CE. They contain some of the oldest surviving Hindu temples and iconography in India. They are the only site that can be verifiably associated with a Gupta period monarch from its inscriptions. One of India's most important archaeological sites, the Udayagiri hills and its caves are protected monuments managed by the Archaeological Survey of India.

Udayagiri caves contain iconography of Hinduism and Jainism. They are notable for the ancient monumental relief sculpture of Vishnu in his incarnation as the man-boar Varaha, rescuing the earth symbolically represented by Bhudevi clinging to the boar's tusk as described in Hindu mythology. The site has important inscriptions of the Gupta dynasty belonging to the reigns of Chandragupta II (c. 375-415) and Kumaragupta I (c. 415-55). In addition to these, Udayagiri has a series of rock-shelters and petroglyphs, ruined buildings, inscriptions, water systems, fortifications and habitation mounds, all of which remain a subject of continuing archaeological studies. The Udayagiri Caves complex consists of twenty caves, of which one is dedicated to Jainism and all others to Hinduism. The Jain cave is notable for one of the oldest known Jaina inscriptions from 425 CE, while the Hindu caves feature inscriptions from 401 CE.

The Iron pillar of Delhi is a metal structure 7.21 metres (23 feet 8 inches) high with a 41-centimetre (16 in) diameter that was constructed by Chandragupta II (reigned c. 375–415 CE), and now stands in the Qutb complex at Mehrauli in Delhi, India.

The metals used in its construction have a rust-resistant composition. The pillar weighs more than six tonnes and is thought to have been erected elsewhere, possibly outside the Udayagiri Caves, and moved to its present location by Anangpal Tomar in the 11th century.