No offence taken just a bit of a laugh. But, in answer to Danny's point:
Reflecting telescope, seed drill, marine chronometer, spinning frame, soda water, hydraulic press, glider,tension-spoked wheel, tin can, modern fire extinguisher, lawnmower, photography, chocolate bar, synthetic dye, Bessemer process, linoleum, sewage system, modern torpedo, light bulb, pneumatic tyre, thermos flask, electric vacuum cleaner, disc brakes, stainless steel, military tank, hovercraft, automatic kettle, float glass, hip replacement, collapsible baby buggy, ATM, wind-up radio.
And last but not least:
AMERICA
In 1170 Welsh prince
Madog ab Owain Gwynedd sailed from Wales and reached America. He returned to Wales to tell his fellow countrymen of the great wonders that he had found. He landed at Mobile Bay, Alabama and travelled up the Alabama river along which there are several forts said by the local Cherokee Indians to have been constructed by “White People”. These structures have been dated to several hundred years before Columbus and are of a similar design to Dolwyddelan Castle in Wales. An Indian tribe was discovered in the 18th century called the Mandans. This tribe were described as white men with forts, towns and permanent villages laid out in streets and squares. They claimed ancestry with the Welsh and spoke a language remarkably similar to it. Unfortunately the tribe was wiped out by a smallpox epidemic introduced by traders in 1837. A memorial tablet has been erected at Port Morgan, Mobile Bay, Alabama which reads: “In memory of Prince Madog, a Welsh explorer, who landed on the shores of Mobile Bay in 1170 and left behind, with the Indians, the Welsh language.”