The Modern Era spanned at this time. Hope this helps.
C - Swahili
D East African societies had more central control than West African societies
In the 15th century, Europe sought to expand trade routes to find new sources of wealth and bring Christianity to the East and any newly found lands. This European Age of Discovery saw the rise of colonial empires on a global scale, building a commercial network that connected Europe, Asia, Africa, and the New World.
Throughout America, the number of participants in choirs has increased where more than 42.6 million individuals (both adults and children combined) are now considered to be part of some choral group.
There are more than 270,000 choral groups all across America (in 2009, as per the study). This participation is far more than any other performing arts.
1 in 6 Americans (above 18) sings in a chorus.
In 2009, the percentage has increased from 14% to 17%.
This information is taken from The Chorus Impact Study of 2009 which can be referred to for further details on Choral Singing and its impact on American life.
The study also examines the effect of choral singing on children and their development along with many other social aspects.
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Ans: New practices were introduced to ensure that the teachings of Judaism would be passed on. The rab- bis at Yavneh made the synagogue more important. They also created a religious service for use in the synagogue.