MDCCLXXVI is the number 1776 written in Roman numerals. It is featured on the base of the pyramid on American dollars and represents the year 1776 AD, which is a celebratory date in American culture.
The year 1776 is an important date because it marked a crucial event in the history of the United States, when the Declaration of Independence was ratified by the United States government. At that time, the American Revolutionary War was in full swing.
Roman numerals are calculated by adding the values of each of the letters together. The values are as follows: M=1000, D=500, C=100, L=50, X=10, V=5 and I=1.