Voting and serving in the military are voluntary personal responsibilities or rights in the United States. The United States has a voluntary military and therefore it is not required that citizens join or work in the military unless they voluntarily choose to do so. In addition, it is not compulsory that citizens vote and instead it is something that they voluntarily decide to do.
It was "manufacturing" that declined steadily during the 1980s and 1990s, mostly due to the fact that many of these jobs were being sent overseas. The Internet also played a heavy role.