Identify the cause of The 1887 Yellow River Flood

The soviet union and the united states believed in two very different economic systems. what were the names of each?

Enter the word you received when you completed the roots of the cold war activity

Match each person with his contribution. aristotle socrates eratosthenes hippocrates he studied the causes of illnesses in search of cures. he created a teaching method that involved asking questions. he determined that earth was round. he educated alexander the great.