Sure, here are some book recommendations for the contemporary socio-cultural and political history of South American states:
1. "Open Veins of Latin America" by Eduardo Galeano - This book provides a critical analysis of the history of Latin America, focusing on the exploitation of its resources by foreign powers.
2. "The Memory of Fire" trilogy by Eduardo Galeano - This trilogy explores the history of Latin America from the pre-Columbian era to the present day, focusing on the experiences of ordinary people.
3. "Latin America: An Interpretive History" by E. Bradford Burns - This book provides a comprehensive overview of the history of Latin America, from the pre-Columbian era to the present day.
As for a brief summary of key events in South American history from 1800 to now:
In the 19th century, many South American countries gained independence from Spain and Portugal. Throughout the 20th century, many of these countries experienced political instability, including military coups and dictatorships. In the 21st century, many South American countries have seen the rise of left-wing governments and the implementation of social welfare policies. However, corruption and economic inequality continue to be major issues in the region.