<span>The factory system brought people from the farms to the cities to work together.
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The correct answer is: Mendel developed his laws of heredity.
The publication in 1866 of the laws formulated by Mendel on<em> the heredity of characters in sexual reproduction </em>was contemporaneous with the evolutionary hypothesis developed by Darwin in his book <em>On the origin of species by means of natural selection </em>in 1859.
There were 5 great achievements, but one of them were Architecture. The ancient Romans developed many new techniques for buildings and construction of all types including concrete, Roman roads, Roman arches, and aqueducts, which evolved their time period.
It was very important for controlling the Mississippi River because it had easier trade since it led off to the gulf of Mexico which was an excellent trading spot, and well the north needed it to make trade easier to obtain
