One big way to add variety in your writing is to add specific details about each subject. Using synonyms instead of boring words (good/great/important/nice) and expand your vocabulary. Look up story ideas if you’re stuck on those. Good luck!! :)
In 1950 it was 9% but increased to about 90% towards the end of the 1950’s sorry if this does not help
Answer:
Wilson cited Germany's violation of its pledge to suspend unrestricted submarine warfare in the North Atlantic and the Mediterranean, as well as its attempts to entice Mexico into an alliance against the United States, as his reasons for declaring war.
(https://history.state.gov/milestones/1914-1920/wwi#:~:text=Wilson%20cited%20Germany%27s%20violation%20of,his%20reasons%20for%20declaring%20war.)
Explanation: