List of siege artillery

Columns: Caliber ( mm ) | Weapon name | Country of origin | Design
152.4 | 152 mm siege gun M1910 | Russian Empire | World War I | 152.4 | Cannone da 152/45 | Italy | World War I / World War II | 155 | De Bange 155 mm cannon | France | World War I | 155 | Obusier de 155 mm C modèle 1881 | France | World War I | 155 | Obusier de 155 mm C modèle 1890 | France | World War I | 180 | 18 cm kurze 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