The answer is atomic bombs
A major reason why <span>the ancient Chinese organized large groups of people to build and maintain irrigation systems was because this not only provided crucial labor services for the empire--it also employed many workers, which was a great boost for the economy. </span>
<span>El Salvador's government disregarded human rights </span>
Answer is C. Internet is a vast field, full of information and knowledge, which are very helpful for studies and research. Some come from <em>safe sources</em> and other might need some <em>precautions</em>. When we read something that <em>seems</em> to be interesting or even truthful, but the people that wrote it don't identify themselves, it can indicate that some information is being hidden on purpose. Also, being anonymous, make people with no <em>accountability</em>.
<span>America was populated by the Natives at that point. Africa was a similar tribal society. European society was in the dark ages mostly because of the invaders who inflicted Christianity upon them, or else they too would have been enjoying indigenous tribal life.</span>
