<span>the term policy agenda includes the issues that attract the serious attention of public officials and other people actually involved in politics at any given time. </span><span>Institutions through which people's concerns become political issues on the policy agenda are known as linkage institutions.
</span>Linkage institutions include elections, political parties, interest groups, and the media.
Answer:
During the years between 1916 and 1970, the vast majority (more than 90%) of African-American population have migrated from rural southern states to more urban north states.
The <em>main causes</em> are <em>economic issues</em>, along with poverty and unemployment on the one hand, and still prevalent <em>racial discrimination</em> in the South, on the other. It took place in fourteen southern states, with Georgia being the second most affected after Mississippi.