Frederick William I of Prussia

Reign: 1713 – 1740
Life: 1688–1740

He was known as the Soldier King. His political awakening occurred during the Great Northern War's plague outbreak in Prussia, leading to his challenge against corruption and inefficiency in government. He initiated reforms, especially in the military, doubling the Prussian Army, and increased the officer corps to 3,000. A believer in absolute monarchy, he focused on state development and financial reorganization, imposing taxes and stringent regulations on public servants. He made efforts to reduce crime, corruption and centralized his authority during his reign of 27 years, cementing Prussia as a regional power. Despite his effective rule, he had a harsh nature, exacerbated by his health issues.

During Frederick William I of Prussia's reign, John V of Portugal ruled Portugal, Charles VI, Holy Roman Emperor ruled Holy Roman Empire, and Louis XV of France ruled France.