: Older editions and text versions are often hosted on educational portals like Prussia Online .
The 9th-grade curriculum focuses on the transformation of the Russian state from the end of the 19th century through the modern era. Key historical periods covered include: : Older editions and text versions are often
: Platforms such as InternetUrok provide video lectures, summaries, and tests that align with the textbook's curriculum. : Older editions and text versions are often