The answer to this question is the term politics. Politics is the activities, actions, and policies of using one's power to make a decision for the whole group or for all members. Politics is also about making laws and how to enforce it to the people and showing the political views to people.
The Roman Empire was founded when Augustus Caesar proclaimed himself the first emperor of Rome in 31BC and came to an end with the fall of Constantinople in 1453CE. ( is that what you need?)
Portugal established trading activities in China in 1513 when Jorge Alvares arrived.
In 1517 the King sent a mission and created a trade center at Nei Lingding.
Portugal and Ming Dynasty relationship gradually expanded but was deteriorated when Simão de Andrade arrived at Guangzhou in 1519. He violated their customs and laws, so Chinese people reacted by killing several Portuguese in the streets.
In 1521 the Emperor Zhengde died and the Ming Court lost interest in having relations with foreign countries.
There were two battles:
In 1521, every Portuguese vessel was confiscated and Chinese defeated a Portuguese fleet at The First Battle of Tamao
In 1522, Martim Alfonso de Merlo Coutinho was sent to establish diplomatic relations but the Chinese defeated them at The Second Battle of Tamao.
The Chinese resisted any Portuguese attempt to return. But in 1535 Portuguese Port Traders were allowed to anchor ships in Macau´s harbors and they could trade. Finally, in 1537 the Portuguese establish a little Colony at Macau to be administered by Chinese authorities.
What exactly is democracy? Abraham Lincoln said, "Of the people, by the people, and for the people." The term democracy is derived from the Greek terms "demos" (people) and "kratos" (power); hence, democracy may be thought of as "power of the people": a form of government that is based on the desire of the people.