To imagine the future, look at the past. How were things different in America a hundred years ago?
There were cars, trains, and telephones. But no cell phone or computers.
Women could work. But they had just won the right to vote and were expected to quit their jobs when they got married.
Big cities like New York had skyscrapers, subways, and electricity. But most people lived in small towns and farmed, didn't always have electricity, and still used horses (since cars were expensive).
African Americans had been freed from slavery. But they still lived under Jim Crow laws in the south, and segregation by custom in the north.
The world had seen its first World War (WWI). But people called it the Great War and believed a world war would never happen again. The Geneva Convention created rules for war, outlawing chemical weapons, abuse of prisoners, and requiring protection and access for medical personnel. Also, the idea for an early UN (the League of Nations) started.
So the big changes are in areas of technology, woman's rights, jobs, war, and Civil Rights.
Now picture technology, wars, and rights in the future.
Do you think technology will improve or decline? What will stay the same, what will change?
Do you think women's and Civil Rights will improve or decline? What will stay the same, what will change?
Do you think jobs will improve or decline? How? What will stay the same, what will get change?
Think it through systematically and you'll have way more than 50 words.