### Comparative Analysis of the Largest National Parks by Nation: Wrangell-St. Elias and Dadohae Haesang National Park

**Introduction**

The identification of the largest national park in a country usually reflects the nation’s geographical diversity and natural heritage. This documentation examines two answers to the query about the largest park in a county, focusing on Wrangell-St. Elias National Park in the United States and Dadohae Haesang National Park in South Korea. Each park serves as a symbol of its country's natural beauty, conservation efforts, and recreational practices.

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**1. Wrangell-St. Elias National Park**

**1.1 Overview**

Located in eastern Alaska, Wrangell-St. Elias spans an impressive 13.2 million acres, making it the largest national park in the United States. The park encompasses a broad range of environments from temperate rainforests at lower elevations to icy mountain peaks that define its upper regions. This vast area holds some of the highest peaks in North America, including Mt. St. Elias at over 18,000 feet.

**1.2 Historical and Ecological Significance**

The park is noted for its significant geological features including volcanoes of the Wrangell Mountain range and the dynamic glaciers in the Saint Elias Mountains. Its landscapes have been shaped by millennia of geological activity evidenced by vast glaciers, deep valleys, and rugged mountains. The park preserves a rich tapestry of Alaskan history, showing traces of Native Alaskan habitation, historic mining sites, and remnants of early settlements.

**1.3 Conservation and Recreation**

Wrangell-St. Elias is a key site for conservation due to its vast, untouched natural environments which support a diverse range of wildlife including bears, wolves, and eagles. The park offers various recreational activities such as hiking, kayaking, mountaineering, and scenic drives, providing both adventure and educational opportunities to its visitors.

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**2. Dadohae Haesang National Park**

**2.1 Overview**

Dadohae Haesang National Park is located in South Korea and it holds the title of the largest national park in the country. Extending across several municipalities in the southwestern coast of the province of Jeollanam-do, the park covers an extensive area primarily composed of marine environments along with a few inhabited and uninhabited islands.

**2.2 Historical and Ecological Significance**

Historically, the region has been important for fishing and maritime trade. Ecologically, it is diverse: spanning coastal ecosystems, island terrains, and vast marine life. The park's complex ecosystem supports various species of flora and fauna, some of which are rare and endemic to the region. The area is also rich in cultural history, highlighted by traditional fishing villages and ancient maritime folklore.

**2.3 Conservation and Recreation**

As a marine national park, Dadohae Haesang plays a crucial role in the preservation of marine biodiversity and offers unique opportunities for marine and coastal studies. Recreationally, it provides activities like island hopping, fishing, and scuba diving, making it a popular destination for both ecological tourism and educational endeavors.

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**Conclusion**

Both Wrangell-St. Elias National Park and Dadohae Haesang National Park are not only the largest national parks in their respective countries but also key areas for conservation, cultural preservation, and recreation. Each park showcases its unique landscape and biodiversity, playing a crucial role in the ecological and cultural narratives of their nations. While Wrangell-St. Elias offers a glimpse into the rugged wilderness of Alaska, Dadohae Haesang represents the ecological diversity and maritime heritage of South Korea, emphasizing the global importance of protecting such diverse natural environments. 

In the context of national identity and environmental significance, these parks demonstrate the priority given by the United States and South Korea to preserving their natural landscapes and ecosystems, hence providing essential sanctuaries for a myriad of species and natural phenomena as well as playgrounds for adventurers and scholars alike.