In . . . . . . . . kingdom of Nepal, high up in . . . . . . . . Himalayas and within sight of . . . . . . . . Mt. Everest . . . . . . . . world's highest mountain, . . . . . . . . way of life in . . . . . . . . villages has hardly changed in hundreds of years.

All the blanks except the third blank will take 'the' as the sentence talks about a particular kingdom (Kingdom of Nepal), a particular range of mountains (Himalayas), a particular mountain (world's highest mountain), a particular group of people and a group of places (villages).