Generally speaking, decision institutional factor is the first one.

决策制度的因素往往为第一位因素。

The determinative factors are industrial factor, comparative factor, technological factor and institutional factor.

其决定因素有产业性因素 、 比较性因素 、 技术性因素和制度性因素.

First, institutional factor: It is a basic reason that the Soviet Union disintegrates.

苏联高度集中的社会制度是苏联解体的根本原因；