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.
As the United States grew in power, so did her ideas of expansion. The foreign powers were beginning to move out of their continents and seek land in other countries. The United States soon followed. They followed in their founderâs footsteps and tried to occupy lands in the far seas. However, in the beginning, this need for more land was called Manifest Destiny. This idea claimed that God was forcing them to occupy the new western lands. The expansionism that occurred in the late 1800âs was not a result of Manifest Destiny, and thus this new idea of expansionism was different from the expansionism ideas of early America.