Answer:
B, A or D
Explanation:
Examples of secondary sources include: journal articles that comment on or analyse research. textbooks. dictionaries and encyclopaedias.
The Portuguese were among the first Europeans to explore the
seas beyond Europe. Henry the Navigator urged his father, King John I, to
conquer the port of Ceuta in Northern Africa. He also sponsored the development
of the Caravel, a sailing ship that is lighter and faster than most ships at
that time. Use of caravels enabled sailors to travel further and with more
provisions, and the light draft enabled Portuguese sailors to explore shallow
rivers and waters. He also sponsored explorations to Madeira, Azores, and West
Coast of Africa.
Johannes Gutenberg invented the printing press
A president should do good to both the parties of the negotiation, goals should be met and should come to an end where one country over powers the other.
<u>Explanation:</u>
While negotiating a treaty, the President of a country should make sure that all the purpose for which the treaty has been signed should be made met. When one country over powers the other, the treaty should not be signed. It should do good for the development of the country and to the citizens of the country.