List of siege artillery

Columns: Caliber ( mm ) | Weapon name | Country of origin | Design
88 | 9 cm Kanone C/79 | German Empire | 1879- World War I | 107 | 42-line siege gun M1877 | Russian Empire | Russo-Japanese War | 120 | 12-cm Kanone M 80 | Austria-Hungary | World War I | 120 | Canon de 120 mm modèle 1878 | France | World War I / World War II | 120 | 12 cm Kanone C/80 | German Empire | World War I | 120 | Obusier de 120 mm modèle 1890 | France | World War I | 149.1 | 15 cm Kanone M 80 | Austria-Hungary | World War I

Example questions:
Of the 120 caliber breech-loading siege guns what French advancement was given to the latest model ? | The earliest Russian designed breech-loading siege artillery listed was used in a conflict that was proposed to be ended in what legal body ? | The earliest developer of breech-loading siege artillery listed was founded on what date ? | One 149.1 caliber breech-loading siege gun was recommissioned from what function to a siege piece ? | The smallest caliber breech-loading siege artillery was used first in what war ?

Answers:
recoil system | Arbitration Court at The Hague | 1 January 1871 | naval gun and coastal artillery piece | Franco-Prussian War