The development that probably hurt it is the reduction of open range herding. In history, people could just let their cattle roam freely and find food since the plains were huge and nobody lived in them. Nowadays, this can be problematic because there are more and more people and settlements and roads with cars so free range herding has been drastically reduced which cost the herders a lot.
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The leaders who spread Islam after Muhammad's death were Abu Bakr, Umar, Uthman, and Ali. If you want the answer from a website, I suggest going here
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Answer:
Asexual, they don't require a mate and the mate may have genes that could change the way the plant looks or lives
Explanation: