sign was used in place of measurement.
Because the microscope was the first measurement tool that could make objects as small as cells visible. Before that there was no evidence for the existence of cells.
Because the microscope was the first measurement tool that could make objects as small as cells visible. Before that there was no evidence for the existence of cells.
the world of graphics before and after the invention of coreldraw
Alexander Graham Bell lived his entire life and died long before the invention of the iPod.
it means before we wrote
Before the invention of cars, gasoline was primarily used as a solvent and as a fuel for lamps and stoves.
The society really struggled to feed itself before the invention of agriculture.Before the invention of agriculture, the condition of the society was really pathetic. Most people were hunters and gatherers.
People were living before each invention and continued to live after, so there is no invention that we CANNOT live without.
Before The Invention Of Soap.
The wheel
Before the invention of the mustard gas, was was fought using tear-inducing irritants, while after the invention of mustard gas, war was fought using chemical weapons.
the prepositional phrase in that sentence is{before the invention],because a prepositional phrase consists of a noun phrase+ a preposition.