Final answer:
Ivan the Terrible, also known as Ivan IV, annexed territories and colonized Siberia during his time in power in the mid-1500s.
Step-by-step explanation:
Ivan the Terrible, also known as Ivan IV, was a powerful ruler in Russia during the mid-1500s. During his time in power, he undertook many actions to strengthen his empire and consolidate his authority.
Two significant things that Ivan the Terrible did while he was in power include:
- Annexation of Territories: Ivan the Terrible annexed several regions, including the khanates of Kazan, Astrakhan, and Siberia. These conquests expanded the Russian Empire's territories and helped establish Russia as a dominant power in the region.
- Colonization of Siberia: Ivan the Terrible recruited Cossacks from southern Russia and Ukraine to colonize Siberia. This colonization effort aimed to secure the newly acquired Siberian territories and establish Russian influence in the area.