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.
First used in 1845, the term Manifest Destiny conveyed the idea that the rightful destiny of the US included imperialistic expansion. This idea certainly contributed to several wars. For example, in 1846 the United States declared war on Mexico and proceeded to win much of what is now the Southwestern United States.irst used in 1845, the term Manifest Destiny conveyed the idea that the rightful destiny of the US included imperialistic expansion. This idea certainly contributed to several wars. For example, in 1846 the United States declared war on Mexico and proceeded to win much of what is now the Southwestern United States.