Vision.

Vision brings freedom. 

It is the ability or power to "see" into the future. Without vision, people and nations will perish, for "Where there is NO VISION, THE PEOPLE PERISH: but he that keepeth the law, happy is he." Prov 29:18.

Getting vision.
The understanding the Word of God brings vision for freedom. Freedom from lack and death. The entrance of the Word into your heart, will birth your vision, and you won't perish. "My son, ATTEND to my words; incline thine ear unto my sayings. Let them not depart from thine eyes; KEEP THEM IN THE MIDST OF THINE HEART. FOR THEY ARE LIFE unto those that find them, AND HEALTH to all their flesh." Pro 4:20-22.

Getting vision shouldn't be difficult for anyone willing to know the Word of God (i.e, Christ, Rev 19:13). Any person, people, and nation/s willing to attend to Christ, will never perish. They will have life, prosperity and health. The opposite is scary; lack, crimes, diseases, wars, etc. 

The Freedom.
The freedom of any people or nation is under God. Any nation of people that are not under God, is not free. The rise and fall of many people and nations will be decided by this. Are they "under and running" with the vision of God or not? Are their laws still "attending" to God? A nation not under God is exposed, and except there are remnants (i.e, believers of Christ) of people still under God, they are totally doomed. Watch, any nation not under God, that exalts itself above others will surely be pulled down in no time. The people's faith and freedom will then lie on either they know God or not.

In conclusion, the Rise and Fall of any people and nation is dependent on vision(i.e, keeping and doing(law) the Words of God, knowing this for sure that God is more than able to keep safe every of His children in every nation under heaven. Keep getting into your spirit, the Word of Life and let your light shine brighter and brighter unto your perfection! (Prov 4:18 "But the path of the just is as the shining light, that shineth more and more unto the perfect day." )