Answer:
The right answer is : "It led to competition between nations for colonies."
Explanation:
There was a fierce competition among European powers to conquer and colonize new territories, especially in Africa and in Asia. Having colonies was a necessary condition to be seen as a great power, a question of status and image. Britain and France had the largest colonial empires. Germany achieved reunification and quick industralization ensued. The German empire came a little late to the colonial division of the world, and a desire to have more colonies was part of their motivation - together with other factors, for sure - in German policies before the start of WWI.
A primary source would be an eye witness account of the event. Someone who seen it happen.
I believe the answer is 4. During the reign of Askia Muhammad, the Songhai empire reached its greatest size.
Askia Muhammad was an emperor, military commander, and political reformer of the Songhai Empire in the 15th century. His rule resulted in trade with Europe and Asia, building of lots of schools, and spread of Islam through his empire.
Hope this helps! Please let me know if I'm wrong :)
Many of them started as a form of lecture gathering, where dons were gathered and a teacher lectured them