In 1921, after years of planning, Stopes and her husband Humphrey Verdon Roe opened the Mothers' Clinic in Holloway , North London .  The clinic, run by midwives and supported by visiting doctors,  offered mothers birth control advice and taught them the use of a cervical cap . Later in the same year, Stopes founded the Society for Constructive Birth Control and Racial Progress , a support organization for the clinic. Her clinic made contraception acceptable during the 1920s by framing it in scientific terms and gained an international reputation. The Malthusian League opened up a second clinic shortly afterward, but admitted that Stopes clinic had been the first in the British Empire , although the League emphasised that theirs was the first scientific clinic where birth control instruction was given under medical supervision (the medical officer was Norman Haire ).  These two clinics 'opened up a new period in the history of the movement aimed at the emancipation of women from their slavery to the reproductive function'.  Although the clinic helped few patients in 1921 'the year was one of the most important in the whole history of birth control simply because of their very existence'. 
Palaeography is the study of the progressive changes and developments in the form of letters over time and is usually applied to writing on less durable materials such as parchment, leather or papyrus. An experienced palaeographer can often date a specific manuscript with fair accuracy. Epigraphy on stone is usually harder to date since more archaic forms were often retained for monumental inscriptions. The causes of changes in scripts were primarily sociological and psychological, a script hand being a reflection of styles and trends for particular time periods. Unfortunately, this is not measurable for the palaeographer whose primary tool is a systematic collection or database of thousands of exemplars of written material of known date.
The Amorites overran much of Sumer and settled along the Euphrates River just north of Sumer, where they founded the city of Babylon, and the Amorites settled to the north, along the Tigris River , in an area that included the city of Ashur. A Sumerian had described the Amorites as nomadic, as a people knowing no submission and having no house in their lifetime. The Book of Genesis in the Old Testament describes an Amorite as the grandson of Ham, youngest son of Noah, and describes an Amorite and other descendants of Noah as living between "the river of Egypt" and the Euphrates (Genesis 10:1-16 and 15:18-21). And in Amos 2:9, Amos describes the Amorites as being as tall as cedar trees.