+**1139** was a year of significant change in twelfth-century Europe. The [Battle](/wiki/Battle) of Ourique in the Iberian Peninsula saw the foundational declaration of the Kingdom of [Portugal](/wiki/Portugal). Concurrently, the Second Lateran [Church](/wiki/Church) Council brought crucial reforms and asserted papal authority across Christendom.
+## See also
+- [Middle Ages](/wiki/Middle_Ages)
+- [Lateran Council](/wiki/Lateran_Council)
+- [Alfonso I](/wiki/Alfonso_I)
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