John II of Portugal vs Julius Caesar

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.

Caesar, as proconsul of Gaul, launched a series of campaigns that conquered all of Gaul (modern France, Belgium, and parts of Switzerland). He fought numerous battles, including against the Helvetii, the Belgae, and the Gallic chieftain Vercingetorix. The wars brought immense wealth and a loyal army to Caesar.

Caesar led Legio XIII across the Rubicon River into Italy, defying the Roman Senate's order to disband his army. This act triggered a civil war against Pompey and the Optimates, ultimately leading to Caesar's dictatorship and the end of the Roman Republic.

Caesar's outnumbered army defeated the larger forces of Pompey the Great at Pharsalus in Greece. Caesar's tactical use of a reserve line to counter Pompey's cavalry charge proved decisive. Pompey fled to Egypt, where he was assassinated, leaving Caesar as the undisputed master of the Roman world.

The Roman Senate appointed Caesar dictator perpetuo (dictator for life), granting him unprecedented personal power. This move concentrated military, legislative, and judicial authority in one person, effectively ending the Roman Republic's traditional system of checks and balances and alarming many senators.

A group of Roman senators, led by Marcus Junius Brutus and Gaius Cassius Longinus, stabbed Caesar to death at a meeting of the Senate in the Theatre of Pompey. The assassination was intended to restore the Republic, but instead triggered another civil war that led to the rise of the Roman Empire.