Answer:
In the middle of the 1800's
Step-by-step explanation:
The age of invention began in the mid-1800s (also known as mid 19th century) It was an era that humanity began to witness the coming up of many inventions that changed the way which people lived, worked and made human life better.
Examples of such inventions were the Typewriter (1867), Telephone (1876), Escalator (1859), Dynamite (1866) Electricity (1888), Moving Pictures (1877) Pasteurization (1856) among other life-changing inventions.