What is the smallest national park in the United States?

In which country can you find the scenic Lake District National Park? In which country is the Komodo National Park located? Which of the following national parks is home to the famous Angel's Landing hike? In which country is the Kruger National Park located? Which national park is known for its unique hoodoos rock formations? In which country is the Serengeti National Park located? What is the name of the largest national park in Canada? Which of the following national parks is home to the highest peak in North America?