Final answer:
The years between 1906 and 1909 don't have a specific event highlighted for its memorability based on the information given, but they were part of a broader historical context that led up to World War I and the end of the old monarchic order.
Step-by-step explanation:
The years between 1906 and 1909 can be remembered for various historical events and developments. However, based on the information provided, there isn't a specific reference to major events that took place specifically between 1906 and 1909 that are highlighted as being particularly memorable. Instead, the information provided offers a broader historical context, telling us that the peaceful period that mostly prevailed in the 19th century, characterized by less frequent and less bloody conflicts compared to previous centuries, came to a decisive end with the onset of World War I in 1914. This period also saw the full overthrow of the old order of monarchy and nobility due to the war. Additionally, there was a rise of republicanism that eventually led to disillusionment due to its inability to prevent the war. The interwar period was also a time of significant cultural and intellectual growth alongside economic struggle.