Philippines Conversion Alarmed Japan: The Christian Century

In the late 16th century, the rapid Christianization of the Philippines by Spanish missionaries — especially Jesuits (from 1581) and Franciscans — alarmed Japan's rulers.

What Happened

• 1565: Spanish colonization begins (Legazpi).
• 1571: Manila founded.
• 1580s–1600s: Mass baptisms; by 1600, ~300,000 Filipino Catholics.
• Missionaries used Philippines as base for Japan missions (e.g., Francis Xavier 1549, but Jesuits expanded from Manila).

Japanese Response (Tokugawa Shogunate)

• 1587: Toyotomi Hideyoshi expels missionaries (Bateren Edict) — fears loyalty to Pope > loyalty to daimyo.
• 1597: 26 Martyrs of Nagasaki crucified.
• 1612–1614: Tokugawa Ieyasu bans Christianity nationwide.
• 1630s: Sakoku (closed country) — expels Portuguese, restricts Dutch/Chinese to Dejima; bans Japanese from leaving.
• 1637–38: Shimabara Rebellion (largely Christian peasants) crushed — seals persecution.

Why the Fear?

The Philippines showed how quickly a population could convert and become a Spanish colonial asset. Japan's fragmented daimyo politics made Christian daimyo (e.g., Ōmura Sumitada, Konishi Yukinaga) potential fifth columns. The Shogunate chose isolation over colonization risk.