The question is ask to list four new inventions, design or ideas of the 1780's, base on my further research and listing, the following are the answer and I do hope you are satisfied with my answer and feel free to ask for more
#1 Ice Cream
#2 Mayonnaise
#3 Piano
#4 Light bulb
Answer: The physical processes on Earth create constant change. These processes including movement in the tectonic plates in the crust, wind and water erosion, and deposition shape features on Earth’s surface
The law did not recognize wives independence in economic, political, or civic matters in Anglo-American society of the eighteenth
Human subjects in clinical trials, hope this helps :)
(an 18 year old died in a gene experiment, pennsylvania)