Final answer:
The iPhone, nanotechnology, and the discovery of human genomes are three modern inventions that didn't exist during the Renaissance.
Step-by-step explanation:
One modern invention that didn't exist during the Renaissance is the iPhone. The iPhone revolutionized worldwide communications by providing everyone with the potential to talk and access information from anywhere.
Another modern invention is nanotechnology, which allowed for the miniaturization of computer devices and their integration into various objects like refrigerators. This advancement has transformed how we live and interact with technology.
Lastly, the discovery of human genomes in the new millennium has led to significant innovation in genetics and medicine, bringing about worldwide changes in healthcare.