According to Beatty (1986), population genetics defines the core of the modern synthesis. In the first few decades of the 20th century, most field naturalists continued to believe that Lamarckian and orthogenic mechanisms of evolution provided the best explanation for the complexity they observed in the living world.
The Netherlands has been a constitutional monarchy since 1815 and a parliamentary democracy since 1848. Previously, it was a republic from 1581 to 1806, and a kingdom between 1806 and 1810 (it was part of France between 1810 and 1813).
The Netherlands, officially called the Kingdom of the Netherlands, is located in northwest Europe. The Netherlands borders the North Sea to the its north and west, Belgium to the south and Germany to the east. The capital and largest city in the Netherlands is Amsterdam, while the seat of government and therefore most government activity is in the Hague. In its entirety, the Netherlands is often called Holland, while its people are referred to as Dutch.