Answer:
His reign involved the Northern War, gaining access to the Baltic, and founding a new capital in St. Petersburg.
Step-by-step explanation:
The option that accurately describes key events of Peter the Great's reign is "His reign involved the Northern War, gaining access to the Baltic, and founding a new capital in St. Petersburg."
Peter the Great ruled over Russia between 1682 to 1725. During his reign, he was involved in the Northern War in 1700 and gaining access to the Baltic, and founding a new capital in St. Petersburg.
He also founded the Russian Senate and established the table of ranks to classify military members