Invented by nationals:

• The decimal point
• Combs
• Keyrings
• Telephones
• Golf
• Radar
• Pneumatic tyre [and probably the wheel haha]
• Stamps
• Economics
• The fountain pen
• Thread
• Digestive biscuits
• Vacuum Flasks
• Continuous electric light
• The Stereotype
• Fax machines
• Halloween
• The US Navy
• The Chilean Navy
• Pianos
• The Life Ring
• Electric clocks
• The Kelvin Scale
• Cash Credit
• Ultrasound
• Gregorian Telescopes
• Marmalade
• The most popular English language song in history
• Microwaves
• Penicillin
• Marmalade
• Lawnmowers
• Encyclopaedia Britannica
• The telegraph
• MRI scanning
• Hypodermic syringes
• Mackintosh Raincoats
• Lime cordial
• The kaleidoscope
• Seismometer
• Basketball
• Sociology
• Radio
• Science textbooks
• Artificial diamonds
• Insulin
• Toilets
• Beta-blockers
• The Bank of England
• The Bank of France
• Fingerprinting
• Tarmac
• Television
• Aqualungs
• The Bicycle [and hence cycling]
• Gas masks
• Speedometers
• Propellers
• Speedo swimwear
• The cloud chamber
• The Steam Engine
• Geosciences
• The Historial Novel
• Fridges
• Colour photography
• Antiseptics
• Reapinh Machine
• Flailing Machine

Discovered here:

• Brownian motion
• Colloid Chemistry
• Polarisation of light
• A cure for scurvy
• A cure for insomnia
• A cure for malaria
• The cellular nucleus
• Sulphuric acid
• Latent Heat
• Neptune
• The Nobel Gases
• Hypnosis
• A vaccine for typhoid
• Carbon dioxide
• Paraffin
• Chemical bonds
• Percussion powder

Other things from here:

• The first cloned mammal
• Logarithms
• The EM equations
• The first man mentioned in the Bible

So...yeah...pretty much everything, ever?

Including myself.