The development of today's microscope is just a culmination of several attempts to find a method to magnify things with lenses and light.
The microscope was exactly that tool that allowed scientists and other professionals to see objects via a lens allowing for humans to have the ability to see it.
There were many inceptions with this tool that have been conceived of at that time of the ancient Egyptians in 2600 B.C.
Lots of other civilizations around the world took a decide to try at developing this instrument and they all had their contribution to the current day microscope.
After the ancient times, however, The French, English, and Germans all arrived on the scene with stunning instruments that paved the way for the current day microscope.
In the microscope's early days, a father and son, Hans and Zacharias Janssen, created the first microscopic instrument which was simply a pipe with a contact placed on the end.
This precursor to microscopes magnified matter from three to nine times the current size. It's debated if it was Hans which actually invented this microscope for the son Zacharias was rather young at this time. You can read detailed information about microscopes at https://www.microscopeinternational.com/.
Bettering of the style of this particular tool in the 1700's was slow going, then in the middle part of the 19th century when Charles A. Spencer developed a microscope with the energy we realize of today.
These powerful machines are strong enough to see things at a large number of times of magnification; making things that could be impossible to see, possible to see. Spencer is reported to be the manufacturing of modern-day microscopes.