Frederic Edwin Church's style is best described as Luminist-infused Hudson River School. His paintings are celebrated for their meticulous detail, breathtaking scale, and dramatic use of light to evoke a sense of awe and the sublime. He frequently painted panoramic landscapes of the Americas, particularly South America, with a focus on the natural beauty and spiritual power of the wilderness. A major theme in his work is the relationship between humanity and nature, often emphasizing the smallness of humans compared to the vastness of the natural world.
Remember it this way: Church's name sounds like "search," and that's exactly what he did in his paintings – he searched for and captured the sublime beauty of the natural world in great detail.