He modernized the Russian Navy. At the time, Russia's navy and military were falling apart but Peter the Great was able to turn it around and invade neighboring countries so that Russia would be able to use the Black Sea and many other valuable shipping ports. 
        
             
        
        
        
On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world's first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people; tens of thousands more would later die of radiation exposure.
        
             
        
        
        
Answer:
completely randomized (answer from Khan Academy)
Explanation:
This study is an example of a completely randomized design since each subject is randomly assigned to one of the treatment groups without extra consideration to other variables.
 
        
             
        
        
        
Answer: Homo Erectus
Explanation: 
Homo Erectus developed into Homo Sapiens.