31. The ejido is a form of communal land-tenure system provided for in the constitution of 1917, following the Mexican Revolution. 32. At the beginning of the 20th century, the region that would become Botswana was divided into different land tenure systems . 33. The declaration of emergency permits the university to bypass the tenure system and lay off professors with a year's notice. 34. When McDowell got tenure in 1984, she became the first woman to come up through the ranks under the tenure system . 35. Revisions would be made so that the tenure system no longer functions the same way as the existing tenure system functions. 36. Therefore, involving communities in Wildlife Management Areas ( WMA ) was identified as being compatible with the PNG land tenure system . 37. As a judge he was chairman of a land use committee set up to review the land tenure system in Nigeria. 38. The United States occupied the territory in 1846, introducing a new land tenure system , while original records of sale were lost. 39. Revisions would be made so that the tenure system no longer functions the same way as the existing tenure system functions. 40. She said Duke was also looking for other ways to underscore the importance of teaching, including possible changes to the tenure system .