Belgium has the oldest existing compulsory voting system.
Answer:
A.
Explanation:
Zheng He was a Chinese explorer who was considered the most important "crossroad of trade".
This clearly repudiated the Supreme Court’s notorious 1857 Dred Scott decision, in which Chief Justice Roger Taney wrote that a Black man, even if born free, could not claim rights of citizenship under the federal constitution.
Technology has deeply affected the global economy and its usage has been linked to marketplace transformation, improved living standards and more robust international trade.