Final answer:
The major theme of Saki's 'Interlopers' is that nature is indifferent to human ownership and conflicts, rendering disputes over land ownership and petty grudges pointless. The story underscores the power of nature and the trivial nature of human animosities.
Step-by-step explanation:
The major theme of Saki's Interlopers most closely aligns with the idea that no one "owns" land because nature is indifferent to human ownership, and there is no pride in holding on to petty grudges. This is demonstrated in the story through the conflict between two characters over land, which is ultimately rendered meaningless by the overwhelming force of nature. The narrative illustrates the futility of human disputes when faced with the power of the natural world and suggests a broader reflection on the transient nature of human claims and conflicts.
The story also touches on the notion that feuds can be resolved, as the two adversaries come to a mutual understanding just before nature’s decisive intervention. This realization underscores the theme that human animosity is trivial in the grand scheme of things and advocates for reconciliation over prolonged hostility.