What feature did World War I, World War II, and the Cold War have in common?

The largest lake in south america is lake titicaca?

What are the similarities and differences between byzantine empire and kiev russia

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.