Newspaper editor John O'Sullivan coined the term Manifest Destiny in 1845 to describe the essence of this mindset, which was a rhetorical tone. It was used by Democrats in the 1840s to justify the war with Mexico and it was also used to divide half of Oregon with the United Kingdom.But Manifest Destiny always limped along because of its internal limitations and the issue of slavery, says Merk. It never became a national priority.t was used by Democrats in the 1840s to justify the war with Mexico and it was also used to divide half of Oregon with the United Kingdom. But Manifest Destiny always limped along because of its internal limitations and the issue of slavery, says Merk.
For that reason, experts considered pregnancies to be full term at 37 weeks. Then in 2013 the American College of Obstetricians and Gynecologists (ACOG) and the Society for Maternal-Fetal Medicine (SMFM) reviewed the research and decided to change the definition of full term to 39 weeks.
Gynecologists from the USA have separated this concept into 4 stages: 1  early term 37-39 weeks of pregnancy; 2  completely full-term 39-41 weeks of pregnancy; 3  late-full-term 41-42 weeks of pregnancy; 4  postterm pregnancy more than 42 weeks. So, after the 37th week of pregnancy, the child is considered full-term and ready to the birth. Of course, he will be not as large as children who are born on 41th week of pregnancy, but all childâs organs are already created and capable to be full-functional.