I voted for the longbow. Good writeup but fails to mention the two fingered salute!
"In the year 633, Offrid, the son of Edwin, King of Northumbria, was killed by an arrow in battle with the Welsh and the Mercians. It's not certain the arrow was from a Welsh longbow but this is an early account of the use of the longbow by the Welsh archers in military action (see illustration<). The story promotes the belief which credits the Welsh with inventing and introducing the longbow into the British Isles. The acknowledged expert on the longbow, Robert Hardy, has written:"If the Welsh did not have bows yet, it cannot have been long before they adopted the weapon from the raiding Danes, but it is more than likely that, however they first came by it, the Welsh, among all the tribes in the British Isles, either retained the use of the bow from much earlier times, or invented it for themselves long before there could have been any chance for them to have learned of its use from the Scandinavians."
"The home of the long-bow is the country between the Severn and the Wye. It was famous before, but it was first used with effect in the last Welsh wars. It was used to break the lines of the Snowdon lances and pikes, so that the mail-clad cavalry might dash in. But later on, the same bows were used to bring the nobles of France down."