The classification system developed by linnaeus in the early 1700s divided living organisms into plant and animal kingdoms. today, that has been expanded into five kingdoms. which of the following inventions was most responsible for creating the need for the additional three kingdoms and why?

the internet allowed scientists to discuss differences between organisms easily.
genetic engineering created new species which then needed new kingdoms.
fossil fuel-based transportation made it easier to explore and discover new species.
microscopes made it possible to learn more about single-celled organisms.