<span>Common history, customs, and values. They agree to follow a set of rules and accept the governments authority.
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The Cambrian Explosion resulted in the evolution of the first representatives of most animal phyla. The second option among all the options given in the question is the correct option. The Cambrian Explosion is also known as Cambrian Radiation and it took place around 542 million years ago.
The Annapolis meeting created the <em>need for the Philadelphia Convention</em>. The delegates of a few states gathered to address the topic of trade among the states, which, at the same time, led to other important topics of the Confederation. This way, they considered a Constitution would have to be drafted in order to address many other relevant topics of the country, aside from commercial trade. The <em>United States Constitution was drafted at the Philadelphia Convention</em> in 1787.
