Complex sentence: In the 1930 state highway renumbering, old Route 21 was broken up into several state routes, with the portion between NY 22 in the hamlet of Amenia and the Connecticut state line in the town of Sharon renumbered as NY 343.
Split into simpler sentences: In the 1930 state highway renumbering, old Route 21 was broken up into several state routes. The portion between NY 22 in the hamlet of Amenia and the Connecticut state line in the town of Sharon was renumbered as NY 343.