The correct option is: "Londoners developed breathing problems due to the smog. - Coal mines polluted the surrounding environment."
Coal was the main source of energy for the first Industrial Revolution, fueled the steam engine and was crucial in the steel industry. Until the industrial revolution, the most used energy came from wood and charcoal. Its consumption was producing a huge deforestation.
Although the operation of the mines (iron beams to support the galleries, methods of ventilation, methods to extract the water, use of trolleys on rails) was greatly improved, in order to increase the productivity, the work in them became something very dangerous and very painful.
The Industrial Revolution in the mid-eighteenth century caused many people to move from the villages to London, shooting the smog during the winters. Its high point came in the winter of 1952. London was paralyzed for five days by smog.
Fear of starvation--after a long ship journey and the ship getting off of route, the Puritans were running out of supplies. Upon arrival Puritans needed food and needed to get settled quickly. The first winter was the hardest on the Puritans and many died due to cold and lack of food.
Encounters with Native Americans--though the tribes the Puritans encountered were friendlier than others, they were unknown to Puritans, others than stories and books written by earlier explorers. Violence would be experienced between the two cultures. Much of the violence centered on competition for food and resources.
Because an extremely limited central government. As the Confederation Congress attempted to govern the continually growing American states ,delegates found that the limitations placed upon the central government rendered it ineffective at doing so.
The claws, the teeth, the instincts, the ears, vision
