The Chippewa Indians, also known as the Ojibway or Ojibwe, lived mainly in Michigan, Wisconsin, Minnesota, North Dakota, and Ontario. They speak a form of the Algonquian language and were closely related to the Ottawa and Potawatomi Indians. The Chippewas were allies of the French and French traders often married Chippewa women.
Perhaps the most recognizable structure in the world is the Eiffel Tower located Paris, France. It was specifically constructed as the entrance gate into the World Fair that took place in the city in 1889. This fair was hosted to celebrate the centenary celebration of the French Revolution. Looking at the massive iron structure, people always want to know how long did it take to build the Eiffel Tower. It took 2 years, 2 months and 5 days to build the tower, a feat that is truly remarkable considering that the builders did not have access to modern gadgets and tools that are present today. The tower is named after the builder and architect, who designed it.
Conceived in 1884, construction of the tower began in 1887 and involved some 50 engineers, 100 iron workers, and 121 construction workers. It was completed on March 31, 1889, at a cost of 7,800,000 French gold francs. The main structure of the tower is composed of wrought-iron, coated (at present) with bronze paint. It is 324 metres (1,063 ft) in height, weighs a total of 10,000 tonnes (73 percent wrought-iron), and for 41 years it remained the tallest man-made structure in the world, until superceded by New York's Chrysler Building, designed by William van Alen (1883-1954), in 1930.