Short Answer 
The 1980 Liberian coup, led by Master Sergeant Samuel Doe and the People’s Redemption Council, marked a significant shift in power from Americo-Liberians to a military rule, profoundly impacting Liberia’s political landscape. Key figures included Samuel Doe and Thomas Quiwonkpa, highlighting the coup’s pivotal role in reshaping governance and societal structures in Liberia.
Step 1: Understanding the Leadership of the Coup
The 1980 Liberian coup was spearheaded by the People’s Redemption Council (PRC), comprising 17 soldiers. Master Sergeant Samuel Doe emerged as the primary leader of this group. This coup was a pivotal moment for Liberia, indicating a shift in power dynamics that had been dominated by Americo-Liberians for over a century.
Step 2: Significance of the Coup
This coup had monumental implications for Liberian history, marking the end of the political reign of the Americo-Liberians. It set the stage for a new era in governance and societal structure. The shift initiated by the PRC is often noted for its drastic impact on the political landscape of Liberia, leading to various social and economic changes.
Step 3: Key Figures in the Coup
While there were many involved, only a few key figures are commonly highlighted in historical records. Apart from Samuel Doe, notable individuals include Thomas Quiwonkpa and other leaders within the PRC. The complete list of the 17 men is not extensively documented, but these prominent figures remain central in discussions about the coup.