The book "The Abyss: World War I and the End of the First Age of Globalization" by Niall Ferguson discusses the profound impact of World War I on global relations and the collapse of the first era of globalization. Ferguson argues that the war reshaped nations and eliminated previous boundaries between people, pointing to the significant changes in alliances and the rise of new ideologies that emerged as a result. This historical moment challenged the traditional notions of nationalism and identity, leading to new dynamics on the global stage.

Ferguson's observation that "the pairing instinct is the great remover of the limits between individuals" underscores how personal connections can transcend artificial barriers. Throughout the war, relationships between nations and individuals evolved dramatically, often leading to unexpected alliances and mutual understandings. This intimate level of connection during tumultuous times illustrates how shared experiences can unite people, dissolving distinctions that once seemed insurmountable.