B. Partitioned Poland
C. Invaded Silesia
D. Rebuilt Berlin after the Thirty Years' War
The correct answer is D. Rebuilt Berlin after the Thirty Years' War.
Fredrick II, also known as Frederick the Great, was King of Prussia from 1740 until his death in 1786. He is regarded as one of the most influential monarchs of the 18th century, and is often considered one of the greatest military commanders in history. Frederick II is credited with a number of significant accomplishments during his reign, including:
A. Defeated Austria in the Seven Years' War (1756-1763), which resulted in Prussia gaining the rich province of Silesia.
B. Partitioned Poland in 1772, 1793, and 1795, along with Russia and Austria, resulting in the complete disappearance of Poland as an independent state.
C. Invaded Silesia in 1740, starting the War of the Austrian Succession (1740-1748).
However, Frederick II is not credited with rebuilding Berlin after the Thirty Years' War (1618-1648). The rebuilding of Berlin after the Thirty Years' War was largely undertaken by Frederick William, known as the Great Elector, who was the ruler of Brandenburg-Prussia from 1640 to 1688.