When did the “age of invention” begin?
the mid-1700s
the early 1800s
the mid-1800s
the early 1900s

The "Age of invention" began in the mid-1800s. Several outstanding inventions were created during this period, especially industrial machines which started to perform the works and tasks that human workers have been doing before. Benjamin Franklin is one of many American investors who made that period a noteworthy succes in America.

Mid 1800's is the answer

the answer is prolly b