1527 - Spain to the united states
The landform separating the two areas is the Alps, which is a wide range of mountains in central Europe.
Africa had to trade for cotton and slaves for the spices, tapestries and glass beads of china, India and the Ottoman Empire
Explanation:
Towards the western verge of the Silk Road is the Ottoman Empire. Present day turkey is the place which was ruled by ottoman Turks and Silk Road extended from china to central Africa. Cotton which was the primary crop of west Africa was traded on the silk road with China in exchange to porcelain, glass products and silk and spices.
Ottoman Empire which also merchandised on the Silk Road procured the slaves of Africa. Central African slaves were purchased by Ottoman Turks. Under Islamic law slaves were to be fed with food and shelter and they have to be given good care by their owner. Slaves were also made unrestrained and were given an opportunity to start a new life with. Ottoman Turks were religious and treated slaves as part of their family.
The answer is:
They will serve in the military when required.
They will support and defend the US Constitution.
They will show allegiance to the nation's laws
Basically, all naturalized US citizens are required to upheld the same obligations like the citizens that born in united states. Voting in election and volunteering in political campaigns are considered to be the right/freedom of the citizens, not the obligation. You would not face legal punishments if you choose to avoid your rights, but you could face it if you avoid your obligations.
Explanation: