The name of the act and the process that created and divided India, Pakistan and Bangladesh is the 'Partition of India'. It happened in 1947, when the till then one country, was divided in three parts and gave birth to the today's Republic of India, Islamic Republic of Pakistan and People's Republic of Bangladesh.
No idea man ☹️ maybe next time
When sedimentary rock go to the bottom of a seafloor it sticks together over time and turns into metamorphic rock. Then metamorphic rock melts and when it cools down it turns into igneous rock. This process happen over and over and its called rock cycle.
