The Soviet Union was geographically huge stretching across Phil's classroom wall map and it consisted of Russian Federation which occupied the largest part, 15 Soviet Republics, for example, Uzbekistan, Kazakh SSR, Georgian SSR, Armenian SSR, Estonian SSR and seven satellite countries in Eastern Europe i.e. Germany, Hungary, Poland, Czechoslovakia, Romania, Bulgaria and Albania which are now independent countries.
President Davis replaced General Johnston with General John Bell Hood, because Hood is more aggressive than Johnston. President Davis hoped that Hood can do more other than manage a fighting retreat. However, General Hood had no time to organize and prepare his army to attack the Union forces at Peachtree Creek on July 20, when he assumed command.
The Missouri Compromise was a strategic solution by Henry Clay to keep the slave and free states equal. It prevented conflict between the north and south as both regions had equal representation in congress regarding state senate votes
It would be the population increased. The Neolithic Revolution was the period in which people, at the time mostly nomads, gradually adapted a sedentary lifestyle, leading to population increase.
:)