Which mountain is the highest peak in the Appalachian Mountains?

Which mountain is the highest peak in the Karakoram mountain range? Which mountain is the highest peak in the Sentinel Range? Which mountain is the highest peak in the Great Dividing Range? Which mountain is the highest peak in the Ethiopian Highlands? Which mountain is the highest peak in Australia? What is the country where the highest peak in South America is located? What is the continent where Carstensz Pyramid is the highest peak? Which mountain is the highest peak in the contiguous United States?