Final answer:
Geopolitical events and public policies have shaped the trajectory of central and south american nations. The Latin American revolutions were historical turning points and violence was often necessary to bring about change. The interventionist approach of the United States also had a significant impact on these nations.
Step-by-step explanation:
Geopolitical events and public policies have played a transformative role in shaping the trajectory of central and south american nations. For example, the Latin American revolutions in the 19th century were historical turning points that led to the independence of many countries in the region. Violence was often necessary to bring about change during these revolutions. Additionally, the interventionist approach of the United States in Latin America during the 20th century, driven by the desire to contain communist expansion, had a significant impact on the political and economic development of these nations.