Internal Combustion

Improved Range-Finding

Chemistry

Machine Guns

Marine Engineering

Dynamite

Large Artillery

Steel Armor Plate

Barbed Wire

Oil Drilling

Commercial Fertilizer

Mechanical Reaper

Power Loom

Advanced Iron Working

Breech-Loading Rifles

Rifled Artillery

Compound Steam Engine

Bessemer Converter

Steel Plows

Paddlewheels

Spinning Jenny

Feed Grasses

Iron Railroad Bridge

Square-Set Timbering

Streamlined Hulls

Cotton Gin

Seed Drill

High Pressure Steam Engine

Scientists have discovered