Complex sentence: As a serving MP he began publishing pamphlets containing his speeches or answers to key parliamentary questions; beginning with "Mr Winston Churchill on the Education Bill" (1902), over 135 such tracts were published over his career.
Split into simpler sentences: As a serving MP he began publishing pamphlets containing his speeches or answers to key parliamentary questions. Beginning with "Mr Winston Churchill on the Education Bill" (1902), over 135 such tracts were published over his career.