<span>Originally, Dvorak went unnoticed and the composer, in frustration, even burned some of his earliest works. Eventually his music did attract some attention and praise an Dvorak experience quite a career boost when Johannes Brahms spoke in high praise of Dvorak. On Brahms pushing, Dvorak even wrote Slovanic dances for piano, the sheet music for this was sold out in just eight days.</span>
So far as I know, there are no prison ships in New York harbor. The closest thing would be the prison on Riker's Island. By "Patriot POWs" do you mean political prisoners of some sort?
Many of washingtons men would no longer be obligated to fight due to the provisional enlistments that typically lasted for no longer than a year. Many of them had already decided they had done their part and since moral was low at this time, it was expected a lot of men would stop fighting on January 1st. Because of this, he wanted to attack while he still had the men to have more power and also boost morale among the men who would potentially be leaving