Can i say this sentence, is this sentence grammatically correct. can i add it in my essay?

the sentence is:

after 4 years, a coincidence no one ever thought would happen, happened.

Read the excerpt from the dark game: true spy stories from invisible ink to cia moles. yet, by the time robert e. lee surrendered to ulysses grant at appomattox, virginia, some four years later, about 620,000 soldiers had died on the battlefields, more than american battle deaths in all other wars from the revolution through the vietnam war. what is the author’s primary purpose for including this detail? to inform readers about the differences between three military conflicts to persuade readers of the seriousness of the american civil war to entertain readers with tales from behind the lines of battle to encourage readers to visit battlegrounds in appomattox, virginia

What do the sketches of 9/11 victims in "portraits of grief" achieve?

Critical reading what do you think keats means in these lines from "when i have fears that i may cease to be"? i may never live to trace / their shadows, with the magic hand of chance a. i may never live to paint pictures of them. b. i may never have a chance to look at them again. c. i may never leave the shadows as long as i live. d. i may never live to write about them. select the best answer from the choices provided