Answer:
Try watching a you tube video about the project, those usually help "/
Explanation:
That's all I got fy :(
I don't know what the exact project is, all there is a rubric so it's kinda confusing.
History of bifocals and trifocals
Benjamin Franklin, the early American statesman and inventor, is credited with creating the first multifocal lens for eyeglasses. Prior to Franklin's invention, anyone with presbyopia had to carry two pairs of eyeglasses — one for seeing distant objects and one for seeing up close.
Answer:
By 1860, 30,000 miles (49,000 km) of railroad tracks had been laid,.
By 1860, 30,000 miles (49,000 km) of railroad tracks had been laid, with 21,300 miles (34,000 km) concentrated in the northeast.
The introduction of coins as Greek currency was a crucial economic advancement that allowed for expedited and simplified trade between varies countries within Greece's domain.
