Justinian<span> ruled the Eastern Roman Empire from 527 to 565. He helped turn into the Byzantine Empire. Among </span>Justinian's <span>major </span>accomplishments<span>: He extended the Byzantine Empire dramatically.</span>
Answer:
Hand dexterity that allowed humans to create changes to their environment. This included cooking food and creating complex tools. Cooked food provided much more and better protein at less work. This meant that humans could spend their time on things other than chewing food.
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The concept of nullification is a "legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution)."