Simple definition in my own words would be to build relationship with someone, For example social studies or History, the colonists would take helps from the natives which is example of alliance, which is to build a relationship with someone or some people that you are not used to and/or don't know.
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Answer: His music had such an important effect on jazz history that many scholars, critics, and fans call him the first great jazz soloist. Armstrong's influence extended far beyond jazz; the energetic, swinging rhythmic momentum of his playing was a major influence on soloists in every genre of American popular music.
Explanation:
Johnson was vetoing a lot of what congress wanted to pass during reconstruction, and Johnson later was impeached.
The mixing of ideas and human culture.
Reformation took place, 500 years ago, as Martin Luther in 1483-1546 tried to reform the catholic church. His attempt to do so instead led to a schism in the church.