Sarnia vs Dourados

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Sarnia is a city in Southwestern Ontario, Canada, with a 2016 population of 71,594. It is the largest city on Lake Huron and in Lambton County. Sarnia is located on the eastern bank of the junction between the Upper and Lower Great Lakes where Lake Huron flows into the St. Clair River, which forms the Canada–United States border, directly across from Port Huron, Michigan. The site's natural harbour first attracted the French explorer La Salle. He named the site "The Rapids" on 23 August 1679, when he had horses and men pull his 45-ton barque Le Griffon north against the nearly four-knot current of the St. Clair River.This was the first time that a vessel other than a canoe or other oar-powered vessel had sailed into Lake Huron, and La Salle's voyage was germinal in the development of commercial shipping on the Great Lakes. Located in the natural harbour, the Sarnia port remains an important centre for lake freighters and oceangoing ships carrying cargoes of grain and petroleum products. The natural port and the salt caverns that exist in the surrounding areas, together with the oil discovered in nearby Oil Springs in 1858, led to the dramatic growth of the petroleum industry in this area.

Because Oil Springs was the first place in Canada and North America to drill commercially for oil, the knowledge that was acquired there resulted in oil drillers from Sarnia travelling the world teaching other enterprises and nations how to drill for oil.The complex of refining and chemical companies is called Chemical Valley and located south of downtown Sarnia. In 2011 the city had the highest level of particulates air pollution of any Canadian city, but it has since dropped to rank 30th in this hazard. About 60 percent of the particulate matter comes from industries and polluters in the neighbouring United States.Lake Huron is cooler than the air in summer and warmer than the air in winter; therefore, it moderates Sarnia's humid continental climate, making temperature extremes of hot and cold less evident. In the winter, Sarnia occasionally experiences lake-effect snow from Arctic air blowing across the warmer waters of Lake Huron and condensing to form snow squalls over land.

Source: Wikipedia

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Dourados is a Brazilian municipality, situated in the state of Mato Grosso do Sul, 225 km (140 mi) Southwest of Campo Grande (the state's capital). It has a population of about 225,000 inhabitants, and its economy is based mainly in arable agriculture (particularly Soya, Maize and Sugar Cane) and in cattle ranching. Dourados is also the second most populous and important city of this state. Its media, commerce, and services more than take care of the thirty cities of Mato Grosso do Sul, including a part of Paraguay. For its size and importance, it is an economic and social capital of a region that possesses approximately a million inhabitants (Vestibule of the Mercosul – the Common Market of the South).

Its development was slow until the first half of the 20th century, because of transportation limitations (highways and roads), especially with Campo Grande and the State of São Paulo. From 1950, it increased its development with the construction of roads. With this, it received migrants from other parts of the country (especially Sulistas and São Paulo) and immigrants (mainly Japanese). The city has a close relationship with Paraguay its next door neighbor, which is 120 km (75 mi) away. This is a strong factor in the ethnic and cultural union between the city and the neighboring country. This explains why 30% of the inhabitants of Dourados have some Paraguayan family link.

Source: Wikipedia