All completed dossiers
Revealed daily file

Dossier №252

Wednesday, September 9, 2026

  1. 01

    1,950 AD

    India’s constitution comes into force and the country becomes a republic.

    This question uses 1950 AD as its sourced chronological anchor.

    The new constitution established a parliamentary democracy, fundamental rights, and universal adult suffrage after independence.

  2. 02

    1,869 AD

    The Suez Canal opens, linking the Mediterranean Sea and the Red Sea.

    A new waterway shortened the maritime route between Europe and Asia.

    The canal eliminated the need for many ships to sail around Africa. Its strategic and commercial value drew intense imperial competition and made control of the route a recurring issue in global politics.

  3. 03

    1,839 AD

    War begins between Qing China and Britain over trade, diplomacy, and the opium traffic.

    This question uses 1839 AD as its sourced chronological anchor.

    British victory forced unequal treaty concessions and opened a long period of foreign intervention in China.

  4. 04

    387 BC

    Plato establishes a philosophical school outside Athens known as the Academy.

    This question uses 387 BC as its sourced chronological anchor.

    The institution fostered sustained inquiry in philosophy, mathematics, politics, and nature for centuries in changing forms.

  5. 05

    671 AD

    A Chinese Buddhist pilgrim describes study in the maritime realm of Srivijaya.

    This question uses 671 AD as its sourced chronological anchor.

    The polity used control of straits, ports, and diplomacy to become a major center of trade and Buddhism in Southeast Asia.