List of infantry support guns

Columns: Caliber ( mm ) | Weapon name | Country of origin | Period
37 | 3.7 cm Infanteriegeschütz M.15 | Austria-Hungary | World War I/World War II | 37 | Canon d'Infanterie de 37 modèle 1916 TRP | France | World War I | 37 | Type 11 infantry gun | Japan | World War II | 37 | 37-mm trench gun M1915 | Russian Empire | World War I | 37 | 37 mm Infantry Gun Model 1917 | United States | World War I | 38.1 | Hughes breech-loading cannon | Confederate States of America | American Civil War | 40 | 1.59 inch Breech-Loading Vickers Q.F . Gun , Mk II | United Kingdom | World War I

Example questions:
The 37-mm trench gun M1915 infantry support gun comes from a country ruled by what house from 1721-1762 ? | The 37 mm Infantry support Gun Model 1917 comes from a country with what capital ? | They Type 11 infantry support gun comes from a country bordered by what sea to the west ? | The Canon d'infanterie de 37 modele 1916 TRP infantry support gun comes from a country with what capital ? | The 1.59 inch Breech-Loading Vickers Q.F . Gun , Mk II infantry support gun comes from a country with what form of government ?

Answers:
House of Romanov | Washington | Sea of Japan | Paris | constitutional monarchy