TOEFL Listening: TPO-TOEFL阅读TPO - 22Y5VC3U4QA4ZQ07N$

According to paragraphs 2 and 3, which of the following contributed significantly to the successful economic development of the Netherlands and of Scandinavia? A. The relatively small size of their populations B. The rapid rate at which their populations were growing C. The large amount of capital they had available for investment D. The high proportion of their citizens who were educated