Помоги перевести этот абзац на русский, только не в переводчике гугл…

Помоги перевести этот абзац на русский, только не в переводчике гугл, там я и сама могу получить ужасный перевод) спасибо! His major thesis, which argued that underdeveloped countries of today possess characteristics different from those that industrialized countries faced before they developed, helped put an end to the simplistic view that all countries went through the same "linear stages" in their history and launched the separate field of development economics—which now focused on the analysis of modern underdeveloped countries' distinct experiences.