African-American music is rooted in the typically polyrhythmic music of the ethnic groups of Africa, specifically those in the Western , Sahelean , and Sub-Saharan regions. African oral traditions, nurtured in slavery, encouraged the use of music to pass on history, teach lessons, ease suffering, and relay messages. The African pedigree of African-American music is evident in some common elements: call and response , syncopation , percussion, improvisation , swung notes , blue notes , the use of falsetto , melisma , and complex multi-part harmony.  During slavery, Africans in America blended traditional European hymns with African elements to create spirituals . 
Latin America can be divided into several musical areas . Andean music , for example, includes the countries of western South America, typically Peru , Bolivia , Argentina , Ecuador , Chile and Venezuela ; Central American music includes Nicaragua , El Salvador , Belize , Guatemala , Honduras , and Costa Rica . Caribbean music includes the Caribbean coast of Colombia , Panama , and many Spanish and French-speaking islands in the Caribbean, including Haiti , the Dominican Republic , Cuba , Puerto Rico , and the less noted Martinique and Guadeloupe . The inclusion of the French West Indies varies by scholars.  Brazil perhaps constitutes its own musical area, both because of its large size and incredible diversity as well as its unique history as a Portuguese colony. Although Spain isn't a part of Latin America, Spanish music (and Portuguese music ) and Latin American music strongly cross-fertilized each other, but Latin music also absorbed influences from the Anglo-Saxon world, and particularly, African music.
Communication – Being assertive and direct is a common American value. Most Americans show their likes, dislikes, hatred, love, happiness, and sadness in a very direct way. Saying NO in a direct manner is generally valued and respected. In the ., people are expected to have direct eye contact even with people in authority. People who don’t have direct eye contact may be considered dishonest or even weak in the American culture. If Americans make mistakes, they often admit it and try to learn from the mistakes. They consider constructive criticism from teachers and others to be a positive thing and they are not easily embarrassed. They do not usually try to avoid embarrassment. In fact, most Americans believe that it is important to be honest and face the facts rather than save face . People from other countries may find the way in which Americans are assertive and direct in their manner to be rude.