<Li> Nanda Devi, 7,816 metres (25,643 ft). Presumed highest in the world before Kangchenjunga was sighted in an era when Nepal was still closed to the outside world . Now known to be the 23rd highest mountain in the world . </Li> <Li> Dhaulagiri, 8,167 metres (26,795 ft). Presumed highest from 1808 until 1847 . Now known to be the 7th highest mountain in the world . </Li> <Li> Kangchenjunga, 8,586 metres (28,169 ft). Presumed highest from 1847 until 1852 . Now known to be the 3rd highest mountain in the world . </Li> <Li> Mount Everest, 8,848 metres (29,029 ft). Established as highest in 1852 and officially confirmed in 1856 . </Li>

Before mount everest was discovered what was the tallest mountain in the world