Who invented baseball is one thing all baseball enthusiasts should know as a part of general knowledge. Yes, baseball it is, the national game of USA. Baseball has evolved from yesteryear's bat and ball games. French manuscripts have description of clerics playing a game something similar to baseball. Apparently, the earliest reference of baseball was done in 1774, in a British publication.
Actually speaking, as mentioned earlier, baseball evolved from bat and ball games played in the olden days. Thus, it might not have been invented as such. But yes, we can say that baseball, as it is played now, was put forth for the first time by Alexander Joy Cartwright. In the year 1845, this man from New York invented or rather came up with the idea of modern baseball field. He, along with the members of New York Knickerboxer Baseball Club, came up with the rules and regulations of contemporary baseball. Cartwright is duly credited with formalizing the modern baseball rules. Therefore the answer to who invented baseball in America is Alexander Cartwright. In fact, the first ever recorded game of baseball was in 1846, where unfortunately for Cartwright, New York Knickerboxers were defeated by New York Baseball club. It was played in New Jersey.