Multiple jobs or switches

Question

Hi I have total 8 year experience but due to certain company issues I did multiple switches .I had started career with very small organizations earlier but then I was settled in big form for four years after that I had maternity leave and baby had major health issues so I had 2 years gap.how do I justify this gap and multiple switches when I go for interview.i have all experience letters from all companies..kindly help how to answer such questions in interview