India and the World: Ancient Connections (1900 BCE–1200 CE)

Trade with Mesopotamia, Greece, Rome, China and Southeast Asia

Mesopotamia (around 2500–1900 BCE)

Harappan traders sent carnelian beads, copper, timber, ivory and cotton to Mesopotamia (the land between the Tigris and Euphrates). Harappan seals and weights have been found there. Mesopotamian clay tablets talk of ships from Meluhha, which most historians identify with the Harappan region. Lothal in Gujarat had a large brick basin that many think was a dockyard.

Greece

After Alexander came to the north-west (326 BCE), contact with the Greek world grew. Megasthenes, a Greek envoy, lived at Chandragupta Maurya's court and wrote the Indica. Indo-Greek kings later ruled in the north-west and issued coins with Greek and Indian writing.

Rome (about 1st century BCE–3rd century CE)

Sailors learned to use the monsoon winds: from about June the wind blows from the south-west towards India; from about November it blows back from the north-east. Ships could cross the Arabian Sea directly. Rome bought black pepper (called 'black gold'), cotton cloth, pearls, gems and ivory. Rome paid mostly in gold and silver coins; hoards of Roman coins have been found in South India. Ports: Muziris (Kerala), Arikamedu (near Puducherry), Bharuch (Barygaza). A Greek sailing guide, the Periplus of the Erythraean Sea, lists these ports.

China

The Silk Road was a web of land routes linking China to Central Asia, India and the West. China sent silk; India sent cotton, spices, gems and horses moved along it. Sea routes also linked Indian and Chinese ports.

Southeast Asia

Indian traders sailed to lands they called Suvarnabhumi ('land of gold'): today's Myanmar, Thailand, Cambodia, Vietnam, Malaysia and Indonesia. They traded cloth and beads for spices, gold and fragrant woods. Around 1025 CE, the Chola king Rajendra I sent a naval expedition against Srivijaya to protect sea trade.

Cultural links with Central Asia and Southeast Asia

Central Asia

The Kushanas (1st–3rd century CE) ruled lands from Central Asia to north India. Under them, Gandhara art mixed Indian and Greek styles; some of the first human images of the Buddha were made here and at Mathura. Buddhism travelled along the Silk Road to Central Asia, then to China, Korea and Japan. Huge Buddha statues were carved at Bamiyan. Chinese pilgrims walked to India to study and collect texts: Faxian (around 400 CE), Xuanzang (around 630–645 CE, studied at Nalanda) and Yijing (7th century).

Southeast Asia

Links were peaceful and mostly through traders, priests and scholars, not conquest. Kings there used Sanskrit names and inscriptions, and local scripts grew from Indian scripts. Great temples show shared ideas:

• Borobudur in Java (about 800 CE), a huge Buddhist monument.
• Prambanan in Java, a Hindu temple complex.
• Angkor Wat in Cambodia (12th century), first built for Vishnu.
• My Son temples in Vietnam, built by the Champa kings.

The Ramayana is loved there in local forms: the Ramakien in Thailand and the Kakawin Ramayana in Java, still shown in dance and puppet theatre. Local people changed and mixed these ideas with their own culture, so this was an exchange, not a copy.

Indian knowledge systems: mathematics, astronomy and medicine

Mathematics

• The Sulba Sutras (by Baudhayana and others) gave rules to build fire altars, including the rule we now call the Pythagorean theorem.
• The decimal place-value system: only 10 digits, and a digit's value depends on its place (ones, tens, hundreds). A dot or circle, zero (shunya), marks an empty place. So 305 = 3 hundreds, 0 tens, 5 ones.
• Brahmagupta (628 CE) gave rules for working with zero and negative numbers, e.g. a number minus itself is zero.
• These numerals went to the Arab world (al-Khwarizmi wrote about 'Hindu numbers' in the 9th century) and then to Europe. That is why we call them Hindu-Arabic numerals.
• Bhaskara II (12th century) wrote the Lilavati, a maths book with problems in verse.

Astronomy

• Aryabhata (born 476 CE) wrote the Aryabhatiya in 499 CE. He said the Earth spins on its axis, explained eclipses by shadows of the Earth and Moon, and gave π ≈ 3.1416.
• Varahamihira wrote on astronomy and the calendar.
• India's astronomical tables were translated into Arabic in Baghdad.

Medicine

• Ayurveda ('knowledge of life') focuses on diet, daily routine, herbs and balance in the body.
• The Charaka Samhita deals with diagnosis and treatment of diseases.
• The Sushruta Samhita describes surgery, over 100 surgical instruments, and repair of the nose (rhinoplasty). Sushruta is often called a father of surgery.
• These texts were translated into Persian and Arabic.

Worked example: place value

Write 2,407 in place value. Step 1: thousands place = 2 → 2 × 1000 = 2000. Step 2: hundreds = 4 → 400. Step 3: tens = 0 → zero keeps the place empty. Step 4: ones = 7. Total 2000 + 400 + 0 + 7 = 2407. Without zero, '247' would mean something else. That is the power of zero.

Try it

In the last 3D step, tap 305, then 350, then 35. Predict first how many blocks of each size you will see. At home: look at the spice box. Find pepper, cardamom, cinnamon and turmeric. Which of these did ancient traders carry to Rome, Arabia or China? Make a small table: spice → where it went → what came back.

Key formulas and definitions

• Meluhha = Mesopotamian name for the Harappan region
• Monsoon: SW wind (summer) → to India; NE wind (winter) → back west
• Rome bought pepper, cotton, gems; paid gold/silver coins (Muziris, Arikamedu)
• Silk Road = land routes: China ↔ Central Asia ↔ India ↔ West
• Place value: 305 = 3×100 + 0×10 + 5×1; zero marks an empty place
• Aryabhata (499 CE): Earth spins, π ≈ 3.1416; Brahmagupta (628 CE): rules for zero; Sushruta: surgery

Worked examples

Common mistakes

• Thinking India's links with Southeast Asia were conquests. They were mostly peaceful exchanges by traders, priests and scholars.
• Thinking zero is just 'nothing'. In place value it is a placeholder that changes a number's value (35 vs 305).
• Mixing Faxian (about 400 CE) and Xuanzang (about 630s CE); Xuanzang studied at Nalanda.
• Thinking the Silk Road was one single road. It was a web of many routes.