About NCMA. NCMA is the national trade association representing the producers and suppliers of concrete masonry products, including concrete block, manufactured stone veneer, segmental retaining walls and articulating concrete block. For over 100 years, the Associationâs mission remains to advance, protect and promote the common interests of its members.
Between 1803 and 1853, the United States almost tripled in size. In the early 1800s, the land west of the United States was very undeveloped.
The Land Ordinance of 1785, adopted May 20, 1785 by the Continental Congress, set the stage for an organized and community-based westward expansion in the United States in the years after the American Revolution.he 1785 ordinance laid the foundations of land policy until passage of the Homestead Act in 1862.