Alfred the Great vs John II of Portugal

Alfred defeated the Viking Great Heathen Army led by Guthrum at Edington. The victory forced Guthrum to accept baptism and the Treaty of Wedmore, establishing a boundary between Wessex and the Danelaw.

Alfred created a network of fortified towns (burhs) across Wessex, each with a garrison and tax system for maintenance. This defensive system protected against Viking attacks and promoted urban development.

Alfred commissioned translations of key Latin texts, including Boethius's Consolation of Philosophy and Gregory the Great's Pastoral Care, into Old English. He also initiated the Anglo-Saxon Chronicle, promoting literacy and education.

John II executed the Duke of Braganza for conspiracy and later personally stabbed the Duke of Viseu to death. These actions crushed the power of the high nobility, centralizing royal authority and eliminating internal opposition to his policies.

John II's committee of experts rejected Christopher Columbus's proposal for a westward voyage to Asia, judging the distance estimates to be inaccurate. This decision led Columbus to seek sponsorship from Spain, resulting in the Spanish discovery of the Americas.

John II sponsored Bartolomeu Dias's expedition that rounded the southern tip of Africa, naming it the Cape of Good Hope. This proved that a sea route to the Indian Ocean was possible, opening the way for future voyages to India.

John II negotiated the Treaty of Tordesillas with Spain, dividing the non-European world along a meridian 370 leagues west of the Cape Verde islands. This agreement secured Portuguese control over the route to India and later Brazil, shaping colonial boundaries for centuries.

John II commissioned the construction of a fleet and the preparation of a voyage to India under Vasco da Gama, though he died before the expedition departed. His planning and support for exploration laid the foundation for Portugal's maritime empire in Asia.