List of anti-tank guns

Columns: Caliber ( mm ) | Weapon name | Country of origin | Period
37 | 3.7 cm PaK 35/36 | Nazi Germany | World War II | 37 | 37-mm anti-tank gun M1930 ( 1-K ) | Soviet Union | World War II | 37 | Type 94 37 mm | Japan | World War II | 37 | 37 mm Bofors | Sweden | World War II | 37 | 37 mm gun M3 | United States | World War II | 37 | 3,7cm KPÚV vz . 34 | Czechoslovakia | World War II | 37 | 3,7cm KPÚV vz . 37 | Czechoslovakia | World War II

Example questions:
How many in the nation that invented the 37 mm Bofors towed anti-tank gun have origins in another country ? | What portion of residents of the nation that invented the Type 96 25 mm AT/AA towed anti-tank Gun inhabit areas that are urban ? | What broader group included the Gauls that occupied the region of the nation that invented the 25 mm APX modèle 1937 towed anti-tank gun ? | Which city stayed capital of the nation that invented the MG 18 TuF towed anti-tank gun ? | Whose rule came after Nicholas II 's autocracy in the nation that invented the 37-mm towed anti-tank gun M1930 ( 1-K ) ?

Answers:
2.5 million | 90% | Celtic | Berlin | Russian Provisional Government