<P> The Big Mac is a hamburger sold by international fast food restaurant chain McDonald 's . It was introduced in the Greater Pittsburgh area , United States , in 1967 and nationwide in 1968 . It is one of the company 's signature products . </P>
<P> The Big Mac is a hamburger sold by international fast food restaurant chain McDonald 's . It was introduced in the Greater Pittsburgh area , United States , in 1967 and nationwide in 1968 . It is one of the company 's signature products . </P>
when did mcdonald 's start serving the big mac
when did mcdonald 's start serving the big mac
in the Greater Pittsburgh area , United States , in 1967 and nationwide in 1968
in the Greater Pittsburgh area , United States , in 1967 and nationwide in 1968