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 (/ËnÉÃ°ÉrlÉndz/ ; Dutch: Nederland [ËneËdÉrËlÉnt]. ) is the main  constituent country  (Dutch: land) of the Kingdom of the Netherlands. It is a small, densely populated country located in Western Europe with three island territories in the Caribbean.ost of the Imperial and French fiefs in what is now the Netherlands and Belgium were united in a personal union by Philip the Good, duke of Burgundy in 1433. The House of Valois-Burgundy and their Habsburg heirs would rule the Low Countries in the period from 1384 to 1581.