D. The end of the cold war
<u>Non-Arabs were treated as second-class citizens regardless of whether or not they converted to Islam, and this discontent cutting across faiths and ethnicities ultimately led to the Umayyads' overthrow. The Abbasid family claimed to have descended from al-Abbas, an uncle of the Prophet.</u>
They mainly functioned at tombs.
B - Slave revolts.
The revolt of Spartacus, which was also the most famous slave uprising in the history of the Roman Empire, lead to questions about the usefulness and effectiveness of the current governmental system in Rome. This, along with other factors, made them plunge into a crisis which ended through the transition to an empire.
Answer:
<em>The United States and Canada have several similarities in their physical geography.
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Explanation:
The US and Canada are neighbouring countries are located in the continent of North America. They have borders with the North Atlantic Ocean and North Pacific Ocean. Both countries have values of area close to each other.
The US has an area of 9,833,517 sq km and Canada has an area of 9,984,670 sq km. Canada is the world’s 2nd largest country by size and the US is the world’s 3rd largest country by size.
The terrain of US consists of vast central plains, mountains while Canada mostly consists of plains and also has mountains and lowlands. Mexico is the neighbour country of both the nations.
