While Ella Fitzgerald appeared in movies and as a guest on popular television shows in the second half of the twentieth century, her musical collaborations with Louis Armstrong, Duke Ellington, and The Ink Spots were some of her most notable acts outside of her solo career.
No, it is false that the victory at Trenton was important because it caused France to sign a treaty with America that would provide the aid America so desperately needed, since French aid didn't come until later.