Complex sentence: In total, 103 Martello Towers were built between 1804 and 1812,74 were built between 1804 and 1808 along the Kent and Sussex coast from Folkestone to Seaford, and 29 along the east coast between Point Clear near St Osyth and Aldeburgh from 1808 to 1812.
Split into simpler sentences: In total, 103 Martello Towers were built between 1804 and 1812. Seventy-four were built between 1804 and 1808 along the Kent and Sussex coastlines from Folkestone to Seaford, and twenty-nine were constructed along the east coast between Point Clear near St Osyth and Aldeburgh from 1808 to 1812.