4000 Kwacha - Elizabeth II Anglo-Japanese Alliance

The Anglo-Japanese Alliance, first signed in 1902, was a genuinely consequential pact — the first formal military alliance between a European power and an Asian nation. It obligated Britain to remain neutral if Japan went to war with a single power, and to intervene if Japan faced two or more. Japan exploited that security in 1904 when it attacked Russia, knowing Britain would keep France out of the conflict. The alliance was quietly allowed to lapse in 1921 under pressure from the United States and Canada, who found its implications increasingly uncomfortable.

Zambia's role here is purely commercial — the Bank of Zambia issued numerous commemorative pieces in the early 2000s for the collector market, with no domestic connection to the subject matter.