What does an accident of nature mean

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

What happened as agriculture became entrenched in the south ?

How are the perspectives presented in the excerpts similar? they show the disappointment and fear mission control workers feel when the lunar module develops problems. they show the huge investment of time and energy mission control workers dedicated to the lunar module. they show how mission control workers view the lunar module as if it is the workers' very own child. they show the relief and excitement mission control workers feel when the lunar module lands on the moon.