Complex sentence: National Life Group is a Fortune 1000 company and a diversified group of financial services companies that offer life insurance, annuities, mutual funds and estate, business succession and retirement planning strategies.
Split into simpler sentences: National Life Group is a diversified group of financial services companies that offer life insurance, annuity and investment products. The companies of National Life Group offer life insurance, annuities, mutual funds and estate, business succession and retirement planning strategies.