In accordance with Neme (2000) in the antiquity consists that contracts of marriages were cultivated when the girl if found between the 13 and 14 years of age, has seen that the life expectancy of the citizens of this time was inferior the 25 years of age. As it describes this author, in middle of century XVII, they had started to appear stories, in medical literature, of very precocious pregnancies, as the case of a girl who gave the light to the six years, in 1658, and of another one, that in 1884, gave to the light to the seven years, for natural childbirth, the two embryos of the masculine sex, stillborn, here in Brazil. It has that if to consider, as it emphasizes Neme (2000), that events as these are bonanza and translate situations of sexual precocidade endcrina associate the clutters of genetic nature. If you have additional questions, you may want to visit Robotics expert . In the end of century XVIII, in the great decurrent occured changes of the Industrial Revolution in the Europe, an ample field to the women confided, in some sectors of activities until then only exerted for the men. These changes had been dividing the women, to the few, between the profession and the maternity, increasing in elapsing of the centuries the age for the first pregnancy (HUNTER, TRAJANO and BASTOS, 2009). However, until at the beginning of century XX, the pregnancy enters the age of 12 the 19 years still was considered habitual event for the cultural standards and the effective customs.
In 1922, for example, Harris defined the age of 16 years as the moment ‘ ‘ timo’ ‘ for the birth of the first son (NEME, 2000). Only from the third decade of century XX, the tax of fecundidade of girls with inferior age the 19 years was diminishing, in the majority of the countries, becoming the pregnancy in this etria band badly seen by the society (PEAR TREE, 2009). However, as they tell to Heilborn et al (2009), from the second half of century XX, when the process of separation between sex and procreation had beginning, a deep transformation of the customs affected behaviors of men and women, where the preservation of the virginity until the marriage was losing its meaning moral..