INDIA'S Assam state has scrapped an 89-year-old law that allowed marriage involving underage Muslims, against opposition from leaders of the minority community who called the plan an attempt to polarise voters on religious lines ahead of elections. Assam, which has the highest percentage of Muslims among Indian states at 34%, has previously said it wants to implement uniform civil laws for marriage, divorce, adoption and inheritance, as the state of Uttarakhand did earlier this month. Nationwide, Hindus, Muslims, Christians and other groups follow their own laws and customs or a secular code for such matters. Prime Minister Narendra Modi's Bharatiya Janata…