What happened at the constitutional convention?
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a. the declaration of independence was signed.
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b. the articles of confederation were changed.
o
o
c. the u. s. constitution was written
d. the preamble to the constitution was removed.

The purpose of the meeting was to change the Articles of Confederation.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.