Torrential monsoon rains have caused widespread floods, landslides and house collapses across north-eastern India, impacting nearly 1.5 million people and causing more than 50 deaths, according to disaster management authorities’ updates on Thursday. In Assam, the largest state in the region, 46 deaths have been reported since the monsoon season began in June, and 1.2 million people are affected by rain-related events. More than 25,000 people are living in temporary shelters in schools, stadiums and other government buildings after their villages were marooned or homes washed away. They have l…