That rule doesn't exist in Little League International rules. Little League International allows for local rules to be established by individual leagues. That is likely a rule that a local league put into place for some reason.
only in little league
The force-out rule is the same in little league as it is in the majors. If there is nowhere else for the runner to go because the runner behind him must advance, the force-out is at the base he's headed to.
Dustin pedroia
I assume that you are refering to Little League Baseball. Remember, you technically have to appeal the out by having the ball and touching the base. The stats should reflect these events because the runner is not out until the appeal.
If the baseball hit the ground in foul territory, the ball is a foul ball. If the baseball hit the ground in fair territory, and the batter/runner is still in the batter's box when the baseball hits him, it is a foul ball. If the baseball hit the ground in fair territory and the batter/runner is out of the batter's box when the baseball hits him, the batter/runner is out and the ball is dead.
No, the batter is not out. The runner could be out though. For example in Little League if the runner touches the ball before it goes by a fielder, the runner is out. (The pitcher does not count as a fielder for the purpose of the rule) The runner is not out if he/she is touching a base.
No. You don't have to steal. But you do have to advance to the next base if a runner is about to occupy the base you just left from.
No, in Major League Baseball a base runner can slide into any base in any direction.
no
the runner who left the base early is called out.
Depending on the league rules the answer is usually yes. It would take a combination of a headsup batter/runner, an inattentive firstbaseman and pitcher, and an umpire familiar with the rule in question. But it has certainly been attempted and with success - even in major league baseball!
No