 
 <prompt> Wetin be di biggest gun wey dem mention? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: The US end World War I with two 3-inch AA guns and improvements dey develop throughout the inter-war period. However, for 1924 work start on top new 105 mm static mounting AA gun, but only few dey produce by mid-1930s because by this time work don start on top 90 mm AA gun, wey get mobile carriages and static mountings wey fit engage air, sea and ground targets. The M1 version dey approved for 1940. During the 1920s, some work dey on top 4.7-inch wey stop, but e come back for 1937, wey lead to new gun for 1944. 