One accomplishment of President Johnson's administration was that it addressed the problem of elderly citizens who did not have health insurance by creating which program in 1965?

Medicare

Explanation:

One accomplishment of President Johnson's administration was that it addressed the problem of elderly citizens who did not have health insurance by creating which program in 1965 called MEDICARE.

President Lyndon B. Johnson who's administration lasted between 1963 to 1969 following the assassination of President John. F. Kennedy established so many programs to improve the standard of living of the American citizens. Some of which are Medicare and Medicaid Services.

While Medicaid provides health care to those with low income, Medicare provides health to older people of 65 years and above, as well as those with disabilities, respective of their income.