Writing a short expository essay presents challenges in balancing brevity with providing enough information to fully explain the topic. The writer must carefully select key points to discuss, organize their thoughts logically, and ensure each paragraph contributes to the overall coherence of the essay. Additionally, the introduction and conclusion must encapsulate the essence of the essay without sacrificing depth. Crafting a short expository essay requires navigating this delicate balance between conciseness and informativeness to engage and enlighten the reader.