What significant event took place in March 1921 regarding the Soviet army?

The correct answer highlights a transformative moment in Soviet history. March 1921 marked the initiation of the New Economic Policy, a pivotal shift in economic strategy that allowed for a partial reintroduction of private enterprise and small-scale capitalism in an effort to revive the struggling economy post-civil war. This change followed the profound hardships experienced during the War Communism period, which had included requisitioning of agricultural products and strict government control over the economy.

The New Economic Policy (NEP) was implemented to stabilize the Soviet economy, alleviate famine, and encourage agricultural production. It was a response to widespread discontent, including significant uprisings such as the Kronstadt Revolt, which occurred in March 1921 at the same time. The NEP's adoption was a clear acknowledgment from the Bolshevik government of the need to make concessions to retain power and support from the peasantry and working class.

While there were various significant events related to the Soviet army and economic policies during this era, the correct choice emphasizes the NEP's role in shaping the future of the Soviet economic structure, demonstrating an understanding of how the country's leadership shifted in response to the pressures and realities of governance following a tumultuous period.