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Answer:
Vasco da Gama and Bartholomew Dias are the explorers who sailed for Portugal.
Explanation:
I'm smart
Answer to question 1:
The "Dark Ages" is a historical periodization traditionally referring to the Middle Ages (c. 5th–15th century) that asserts that a demographic, cultural, and economic deterioration occurred in Western Europe following the decline of the Roman Empire.
Answer to question 3:
Chivalry has changed quite a bit since it appeared in the middle ages. ... In social situations, chivalry is still acceptable. That said, I think it comes down to men and women being courteous to each other rather than men being the only ones practicing courteous acts. A woman should hold the door open for men and women.
I know its not the full answers but this is the best I can do based on the questions.
the signing of the Treaty of Versailles
The Treaty of Versailles ending fighting between the Central Powers and the Triple Alliance (minus Russia).
The Treaty of Versailles set up a series of restrictions on the Central Powers following World War I. Germany was most restricted under the treaty due to the War Guilt clause. The Treaty also set up the League of Nations which would monitor and negotiate in the case of invasion in the future.