Everything from radios,to television to,computers and the internet.
Most of the electronics in use in American homes and workplaces were invented in the 1900's. Many of them were invented in the last 50 or 60 years.
Rural areas across the United States experienced population decline in the late 1900s as people moved to urban centers for job opportunities and amenities. Some regions in Eastern Europe also saw declines due to economic challenges and political changes during that period.
W.E.B Dubois
what are some there inventions in 1800s-1900s
archetecs
sunlight,solar energy
Orphans in the 1900s faced various forms of hardships. Some were placed in overcrowded orphanages with harsh living conditions, while others were sent to work in labor-intensive environments at a young age. Many orphans experienced neglect and abuse, with limited opportunities for education or a stable upbringing.
US Officers (especially pilots and aircrewmen) were experienced WW2 veterans. Communist leadership, pilots, aircrewmen, etc. were NOT experienced.
Some women do experience cramps during ovulation. This is most likely what you experienced.
John Steinbeck
There are a few energy transformations when a gun is fired. Some of these include potential to kinetic energy, chemical to mechanical energy, and chemical to electromagnetic energy.
Some enzymes, such as ATP synthase can preform many more times than 100 chemical transformations a second.
some time in the 1900s