If current government of a wealthy and developed country (say Norway) would be put in charge of a poor third-world country (say Nepal), would it become wealthy? Or is there more to country well-being than good management?

Imagine every person in charge of Norwegian/German/Swiss government's planning apparatus — economists, sociologists, lawmakers, bureaucrats — moves to a “third-world” country like Nepal to rule this country for 25 years, and every local official agrees to listen to their directives. They bring no funding, just their experience. Would this country become a “first-world” country?