<|im_start|>user
What are the first and third eras of aircraft history mentioned in the text below and when did they end? Use a bullet list and the format {Name} ({Year}).

Context:
Flying model craft and stories of manned flight go back many centuries; however, the first manned ascent — and safe descent — in modern times took place by larger hot-air balloons developed in the 18th century. Each of the two World Wars led to great technical advances. Consequently, the history of aircraft can be divided into five eras:

- Pioneers of flight, from the earliest experiments to 1914.
- First World War, 1914 to 1918.
- Aviation between the World Wars, 1918 to 1939.
- Second World War, 1939 to 1945.
- Postwar era, also called the Jet Age, 1945 to the present day.<|im_end|>
<|im_start|>assistant
- Pioneers of flight (1914)
- Aviation between the World Wars (1939)<|im_end|>
