Complex sentence: She met Asaf Ali, a leader in the Congress party at Allahabad and married him in 1928, despite parental opposition on grounds of religion (she was a Brahmin while he was a Muslim) and age (a difference of more than 20 years).
Split into simpler sentences: She met Asaf Ali, a leader in the Congress party, in Allahabad. They got married in 1928, despite parental opposition on grounds of religion and age (he was a Muslim and her senior by more than 20 years).