Complex sentence: LP was founded in New York in 1964 by Martin Cohen, following his difficulty in obtaining instruments for his own use, partly because of restrictions then in place on imports of instruments (and everything else) from Cuba following the Cuban missile crisis of 1962.
Split into simpler sentences: LP was founded in New York in 1964 by Martin Cohen, following his experience of the difficulty of obtaining instruments for his own use. This was partly because of the restrictions then in place on imports of instruments (and everything else) from Cuba following the Cuban missile crisis of 1962.