Alexander VI gave this country rights to lands east of a line of demarcation in the Treaty of Tordesillas (TOR-day-SEE-yass).
One ruler of this nation was killed during an attempted invasion at the Battle of the Three Kings. This nation received a new constitution during the long dictatorship of economist António (*) Salazar. One dynasty in this country was started by John IV, who ended Spanish rule of this nation and created the Braganza dynasty. Alexander VI gave this country rights to lands east of a line of demarcation in the Treaty of Tordesillas (TOR-day-SEE-yass). For 10 points, name this Iberian nation, whose explorers included Bartolomeu Dias and Vasco de Gama.
One ruler of this nation was killed during an attempted invasion at the Battle of the Three Kings.
{Portugal} [or {Portuguese Republic}; or {República Portuguesa}]