✎ Long struggle between Barbarossa and the papacy (1155 - 1177) (jan 1, 1155 – jan 1, 1177)
Description:
• 1155 — Adrian IV + Barbarossa crush the Roman revolt
• 1159 — Adrian dies; Alexander III elected; Barbarossa rejects him
• 1159–1177 — the church split (Barbarossa backing rival popes)
• 1176 — Barbarossa defeated at Legnano
• 1177 — Treaty of Venice ends the conflic
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