If you look at periods of apostasy since Adam, it seems appropriate that God allowed the longest or Great Apostasy to occur after the greatest of all prophets was killed -- the Savior Jesus Christ. The greatest apostasy follows the greatest sin. "1 And he began to speak unto them by parables. A certain man planted a vineyard, and set an hedge about it, and digged a place for the winefat, and built a tower, and let it out to husbandmen, and went into a far country. 2 And at the season he sent to the husbandmen a servant, that he might receive from the husbandmen of the fruit of the vineyard. 3 And they caught him, and beat him, and sent him away empty. 4 And again he sent unto them another servant; and at him they cast stones, and wounded him in the head, and sent him away shamefully handled. 5 And again he sent another; and him they killed, and many others; beating some, and killing some. 6 Having yet therefore one son, his wellbeloved, he sent him also last unto them, saying, They will reverence my son. 7 But those husbandmen said among themselves, This is the heir; come, let us kill him, and the inheritance shall be ours. 8 And they took him, and killed him, and cast him out of the vineyard. 9 What shall therefore the lord of the vineyard do? he will come and destroy the husbandmen, and will give the vineyard unto others. " (Mark 12:1-9) The vineyard is the world. Heavenly Father is the owner. The servants are the prophets that were killed. Father sent his one "wellbeloved" son and they killed Him also. The greater the sin the greater the consequence. The light and knowledge of the gospel were taken for centuries. The world fell into the greatest period of darkness called the "dark ages". Ignorance and evil were common. The Lord knew that if he were to restore His true gospel with true prophets during those dark times, those prophets would have been killed immediately -- the church never would have survived. The Lord had to wait for the proper time. (But the Lord knew all this beforehand.) People came and settled in this special land called America. They eventually established a Constitution under the inspiration of God. Independence was declared in 1776. The gospel was restored in 1830 in New York by a prophet named Joseph Smith. The heavens were opened and angels came down and bestowed keys of authority as in days of old. I believe the main reason for God establishing this great land of liberty called America, was so that He could establish His gospel again on the earth in preparation for the Second Coming of the Lord. No one can deny that following 1830 came the greatest light and knowledge upon the face of the earth in the history of all mankind. Within only about 200 years, advancements in science and the quality of life catapulted far beyond all that was accomplished in the last 5,000 years. Freedom was a great part of this success, but I believe the main cause was the light of inspiration showering down from heaven when the gospel was restored and when the heavens were opened.