Your best friends name is little Sophia
The correct answer is false.
It is false that the caliphs declared conquered people had to convert to Islam.
Indeed, under Islam teachings, conversion cannot be forced to anyone. Islam prohibits to impose conversion. The Caliphates respect other people's religions but invited them to convert through missions. Many people accepted to convert to the Muslim religion in the times when conquer and trade spread Islam to North Africa, Asia, and parts of Europe such as the Iberian peninsula.
Pittsburgh, Pennsylvania is widely recognized as one of the most important steel production cities in the United States.
Answer:
One of the generals of the Northern Zhou's army was Yang Zhong, the Duke of Sui. After Yang Zhong died, his son Yang Jian inherited his father's title, and usurped the throne in 581 by military coup. Yang Jian adopted the title Emperor Wen, and took over the Northern Zhou kingdom, renaming it the Sui Dynasty.
Explanation: