Officials collected revenue, maintained order and managed resources. Roads, rivers and sea routes carried goods and messages. Rules for trade, weights and money helped exchange. Rulers could also support learning, art and religious institutions.

An army needed food, equipment, animals and payment. Farmers and craftspeople produced these resources; transport brought them where needed. Military strength therefore depended on economic work, not only on a ruler’s commands.

Alexander of Macedonia conquered the Persian Empire and then campaigned in the northwestern subcontinent. He fought Porus in the Punjab region. His soldiers later refused to continue eastwards towards the Ganga plain, and he withdrew. The campaign involved fierce fighting and great suffering.

Alexander died in 323 BCE. His empire divided among successors. The Indian campaign did not place the whole subcontinent under Greek rule, but it became part of longer contacts involving trade, diplomacy and ideas. Stories of his conversations with Indian sages exist in different versions; they are not word-for-word recordings.

Ashoka, Chandragupta’s grandson, ruled in the third century BCE. His war against Kalinga caused immense suffering. An edict expresses regret about the deaths, removals and distress caused by conquest. He increasingly promoted dhamma and moral conduct.

Ashoka supported Buddhist teachings and emphasised restraint and welfare. This does not mean the empire instantly lost its army or all punishments ended. His inscriptions show a change in stated priorities, alongside continuing royal authority.

Distant territories were hard to supervise. Warfare cost money. Heavy demands for tribute could create resentment. A disputed succession or a weakening centre could encourage local rulers to break away. Droughts or floods could damage production and revenue.

Mauryan rule ended around 185 BCE, several decades after Ashoka’s death. The chapter points to difficulties in holding the empire together. We should not reduce the decline to a single unproven claim such as “peace caused collapse”. Political unity could support exchange, while conquest and control also imposed suffering and unequal power.