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 Homestead Act. Another spike in westward migration came with the Homestead Act of 1862 and similar bills in the 1870s. Beginning on New Year's Day, 1863, individuals could apply for a 160-acre homestead west of the Mississippi River.The land was free, but in order to get the deed, the owner had to build a 12x14' home and grow crops for five years.he Homestead Act of 1862 and other similar legislation encouraged more settlement by giving away free land in the Great Plains to individuals.