Thus why does not the leader emerge all along these ages?
If He is ready for the social action, so what is the thing that prevent him from the emergence on the theatre of the life through the means of the short absence or after it, instead of changing it into a great absence, when the social action circumstances of the change was more simple and easier at that time, and his actual relationship with the people through the arrangements of the short absence period was to let him collect his raws and to start his activity with a powerful beginning, while the ruling powers around him couldn’t reached the utmost level of The power and ability as the humanity reached at last through the scientific and industrial progression?
The response is: The success of every social change activity relates with the objective conditions and it’s circumstances, and it is impossible for it to achieve it’s goal unless by the conditions and circumstances is full filed.
The social change activities whom the heaven out bursts them on the earth are distinguished with the unrelated to the objective circumstances in it’s missionary aspect[1], since the message which the change activity depend on here is divine, and it is from the heaven’s made, it is not from the objective circumstances made, but it depends on the objective circumstances in it’s executive aspect, it and it’s success with it’s scheduling are related and it’s specific time, with these situations that the heaven waited for five centuries of the pre- Islamic paganism, until the last messages of it which is descended to the hand of the prophet Mohammad (S.), since the relationship with the objective circumstances for the execution was dictating it’s delay through the world’s need for it since long time ago.
And the objective circumstances which have an effect in the executive aspect of the change activity, among it, what formed the suitable climate, and the general weather for the objective change’s, and from them that informed some of the particulars, which the movement of the change requires through it’s detailed turning points.
As for the moving activity which for instance lining successfully led in u.s.s.r., was connected with a factory as a matter of breaking out the world war (I), and the Czarism decay, and this which shares in creating the suitable climate for the change activity, and that was connecting with other limited, and partial factors, for instance lining safety in his journey through which he sneaked into USSR, and then he led the revolution. So if accidentally something hinder him on the way, it would be a reason for the revolution to get away that is the cause for him to appear on the theater.
And the Allah’s (S.W.) commandment that you never find any chang in the changes Devin, on a comfort in the part of changes in some specific time which periods doesn’t go with it, and public weather to save change aspect, from here we realize that Islam came on the last moment at the end of the messengers, many difficulties happened in some ages.
Inspite of Allah’s (S.W.) authority for defeating the whole difficulties and the impediments in the way of the heavens mission, and to create the suitable climate for that by the marvel, He (S.W.) didn’t desire to use this style; since the test and the suffering with the tribulation through which the human integrate prescribed on the heaven change activity to be naturally and objectivity from this aspect, and this sometime doesn’t forbid the interference of Allah’s (S.W.) regarding to some cases, which can not create the suitable climate {situation}, but sometimes the movement through that suitable climate perhaps requires it, and for that the assists and the divine providence that Allah (S.W.) provides to his Holy men within critical minutes.
He (S.W.) protected the mission, For example Namrud’s fire suddenly becomes comfort and peace to Ibrahim[2], and the hand of perfidious jewish, which is raised with the sword over the Holy head of the prophet (S.) suddenly became paralyzed, and lost it ability to move[3], and suddenly a great storm that over spread the atheists and polytheists, camps who encircled by madinah at the day of Khandaq and stirred the terror in their minds and hearts[4].
But all that did not pass the situation and the offering of the assist through the decisive minutes after the climate was suitable and the corresponding situations for the change in general perhaps was informed in natural shape.
So according to the objective situations, we study the position of Al- Imam Al- Mahdi (A.S.) to demonstrate the change activity for which He (A.S.) is prepared for, the executive aspect is truly as any other social change activity with the objective circumstances that contribute in ensuring the suitable climate for it.
So it was naturally to be placed according to that.
It is known that Al- Mahdi (A.S.) hasn’t already prepare himself for a limited social act, nor for a change activity that restricted for this or that part of the world, since his mission for which He was kept by God (s.w), is a public change, which brings people, the whole people out from the darkness of the tyranny to the glow of the justice[5].
And the practicing of this great change activity is not enough by only reaching the mission and the righteous leader, other than, the conditions could be completed through the epoch of the prophecy it’s self, but it requires a suitable universally climate and a helpful general situation, that ensures the required objective circumstances for the universal change activity.
And from the human’s aspect, the civilized feeling of a human by the exhaustion considered it as a principal factory in creating that suitable climate to agree with the new justice mission, and this feeling by the exhaustion is formalized and established through the various civilization experiences, from which the human of the civilization gets out, while He is oppressed with negatives of what He has built, He is Perceiving his needs for the assistance, and paying attention by his nature to the invisible or to the transcendental.
From the material aspect, it is possible for the conditions of the modern material life to be more available than the old life conditions in a period as the period of the short absence to publish the mission through the whole world, and there by what will be achieved of approaching the distances, and the great ability for the communication among the people of the earth and to ensure the tools and means, that a central system needs to practice the enlighten for the people of the world and their culture on the base of the new mission.
As for what is mentioned through the inquiry of the military tools growing that whom the leader will face through the promised day, whatever his emergence was delayed, so this is reality, but what is the growth of the material shape of the power benefit with the spiritual defeat from the inside, and the spiritual structure collapse of the human who owns the whole of these powers and tools? And how many times a high civilized stracture colapsed in the history in the first gas touch; since it was colapsed before that, and lost the trust of his existence and the satisfaction of his being and the confidence of his reality[6].
  
	
[1] Through the importance, that the martyr sadre had given to the objective circumstances and it’s role to enrich the revolutions with the means of success, and to help them in order to gain the success, hence the martyr Sadre broughts a new theory up in the comprehension for the social change activity, which the heaven creates through the supernal missions, so, it is in it’s missionary aspect it connects with it’s particular law, but in it’s executive aspect employs the objective circumstances and it connects with them in scheduling and success, and I mean by the objective circumstances: The political and the social states of the nation and the contemporary political actuality and the scale of nation’s ability in the capabilities of it’s own personality and the spiritual inclination.
[2] A sign to his (S.W.) saying: {They said: Burn him and save your gods, if you are going to do {anything}. We said: O’ fire be comfort and peace to Ibrahim; And they desired a war on him, but we made them the greatest losers} Al Anbyae verses no. 68 – 70.
[3] Please review the narrative in the interpretation of Qurān by Ibn Katheer vol. 2: p. 33, and review: Al Bihar / by Al- Majlisi vol. 18: p. 47, 52, 60, 75 the section of the prophet’s (S.) Marvels.
[4] Please review The Islamic history book / by At- Tabari vol. 2 p. 244, the events of the fifth year, A.H.
[5] As the Holy Prophetic tradition text: {if there is no day left from the world except one day, Allah (S.W.) will prolong that day till he (S.W.) sends a man from me or from my progeny, who will fill the earth with Justice and equity as it before was fouled with tyranny and injustice}.
Please review: Al- taJ Al- Jamea Lilusool / by Mansoor Ali Nasif vol. 5 p. 360 the foot note, He said: Abu dawood and At- Tirmuthi narrated it.
[6] We already have seen the confirmation for this saying through the initial of the ninth that the martyr Sadre has pronounced according to his deep experience with the human community, the USSR. Is already collapsed a very fast collapse, while it was one of the two leaders, who were dominating on the world and by a manner, which amazed the whole communities.