Step 1.44: Wielki

It was the "highway" for migrations and conquests by the Huns, Mongols, and Tatars.

While a single academic "paper" titled exactly "Wielki Step 1.44" is not found in standard academic databases (like JSTOR or Google Scholar), the naming convention strongly suggests it belongs to one of these niches:

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Includes the Pontic-Caspian steppe (Ukraine/Russia) and the Mongolian plateau.

Is this for a video game (like Europa Universalis), a history class , or a tabletop game ?

In a historical and geographical context, the Great Steppe (Wielki Step) is the massive stretch of grassland from Eastern Europe to East Asia.