Large conglomerates from India and abroad today announced huge investment and job creation plans at the three-day Vibrant Gujarat Summit, which kicked off this morning in presence of Prime Minister Narendra Modi and leaders from across the world...While Reliance Industries chief Mukesh Ambani said his group would invest Rs 1 lakh crore in 12-18 months across businesses, Kumar Mangalam Birla of Aditya Birla Group announced investment plans for Rs 20,000 crore in the state. Among foreign companies, Australian mining giant Rio Tinto's CEO Sam Walsh said the group would add 30,000 jobs in diamond cutting industry in Gujarat...Modi said there is a need to work for sustainable and inclusive growth and fluctuations in the global economy is the biggest concern. World Bank President Jim Yong Kim, who was also present, said tax and subsidy reforms are essential for inclusive growth in India.