Well, since people own their own analienable rights (life liberty and the
persuit of happiness) and that they would not crumble after
escaping Britain. His visions for America's future were very
optomistic.
<span>Some causes were:
-Corruption was one of the main reasons for the decline, to gain power a military general might bribe officials and soldiers guarding the wall of the city to overthrow the empire
-Most Byzantine emperors were not capable of keeping a successful army and were often incapable of leading their troops as well
-The Empire lost many important territories
-There are other reasons I cannot really think of right now</span>
By the given statement in question, Truman wanted to imply that the effect of communism was growing and if it could not be checked by aiding such countries as Greece and Turkey, then it would have far reaching effects. Truman feared that communism would slowly grip these countries in financial trouble and spread to the Latin American countries and the countries in the East at a very fast rate.
A quickly again population: China is going to be the first major economy to go dull before if gets rich, putting huge strains on people in the working age who are going to have to pay for health care and pensions for a disproportionate number of elderly citizens who do not work. For a nominally socialist county, the weave for china's social safety is very loose and horribly frayed in some parts. Most notably their healthcare system. This can be often cited as a major cause of the pretty high savings rate. Something that often chockes off consumption and adds to the imbalance in China's economy.