India is a nation of a thousand divides. But if the country's recent progress in reforming its tax code is any indication, it may be slowly overcoming its penchant for political fragmentation. On March 29, the lower house of the Indian Parliament passed a new Goods and Services Tax (GST) intended to broaden the country's tax base, boost the government's revenue and increase the Indian tax-to-GDP ratio. The comprehensive measure is merely the latest sign that Indian Prime Minister Narendra Modi's attempts to consolidate power are beginning to bear fruit, providing the clout he needs to push through policies that have otherwise stalled in the face of lawmakers' squabbles....