Answer:
The orinignal Roman calendar had 10 months.
It is true because if you look for colonial time books it tells you
The Albany Plan of union was proposed by Benjamin Franklin and called for the formation of a permanent federation of the American colonies. The Albany Plan of Union was a proposal introduced by Benjamin Franklin during the Albany Congress in 1754.
I think it would be because he didn't want to be too overpowered for the sake of it, also so the next in his spot wouldn't take things past the limit and cause damage to the area around. Hope this helps! :)