In late March 1857 a sepoy named Mangal Pandey attacked British officers at the military garrison in Barrackpore. He was arrested and then executed by the British in early April. Later in April sepoy troopers at Meerut refused the Enfield cartridges, and, as punishment, they were given long prison terms, fettered, and put in jail. This punishment incensed their comrades, who rose on May 10, shot their British officers, and marched to Delhi, where there were no European troops. There the local sepoy garrison joined the Meerut men, and by nightfall the aged pensionary Mughal emperor Bahādur Shah II had been nominally restored to power by a tumultuous soldiery. The seizure of Delhi provided a focus and set the pattern for the whole mutiny, which then spread throughout northern India. With the exception of the Mughal emperor and his sons and Nana Sahib, the adopted son of the deposed Maratha peshwa, none of the important Indian princes joined the mutineers.
The geography was trecherous and very scary
The major cultural contribution of the Byzantine Empire that means a picture made of many cubes of marble or glass is a Mosaic
Sometimes they figure out how to build better shelters or learn better farming and hunting techniques for the environment they live in