The thing which was a major factor that threatened the major unity in the United States in the mid-19th century was:
<h3>The Great Depression</h3>
This refers to the period around 1929 in the United States which has a profound effect on the national economy.
This led to the failure of many banks, increase in unemployment and high deflation rates which all threatened the national unity.
Read more about Great Depression here:
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Alliances provide mutual support in the event of an attack; protecting security of entire regions; providing framework of military security through organizations such as NATO.
Explanation:
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A Special Interest Group (SIG) is a community within a larger organization with a shared interest in advancing a specific area of knowledge, learning or technology where members cooperate to affect or to produce solutions within their particular field, and may communicate, meet, and organize conferences.
<span>Chief of Party. In this role, the president helps members of his or her political partyget elected or appointed to office. The president campaigns for those members who have supported his or her policies. At the end of a term, the president may campaign for reelection.</span>
