which of the following rulers made the songhai most powerful but also caused internal problems

1. man of the blue vell
2. al-mansur
3. taghaza
4. askia the great

4. Askia the Great

The ruler who made the Songhai most powerful but also caused internal problems was Askia the Great.

To determine which ruler made the Songhai most powerful but also caused internal problems, we need to analyze each option provided:

1. Man of the Blue Veil: This ruler is not well-known in the context of the Songhai Empire, so we can exclude this option.

2. Al-Mansur: Al-Mansur was a ruler of the Moroccan Marinid dynasty, which interacted with the Songhai Empire, but his reign did not significantly impact the Songhai's internal power or cause internal problems. Therefore, we can exclude this option.

3. Taghaza: Taghaza refers to a remote salt-mining center in the Sahara Desert. It is not a ruler, but rather a location, so we can exclude this option.

4. Askia the Great: Askia the Great, also known as Muhammad Ture, was the ruler who made the Songhai Empire most powerful. However, his reign was not without internal problems. While Askia the Great achieved remarkable political and military success, his rule led to centralization of power, conflicts with religious leaders, and succession disputes, ultimately resulting in internal problems.

Based on these explanations, the correct answer is option 4. Askia the Great both made Songhai most powerful and caused internal problems within the empire.