Proposed a dialectical model according to which all reality, all history, and all ideas progressed toward perfect freedom.

The answer is Georg Wilhelm Friedrich Hegel. He was German thinker who built up a dialectcal plan that accentuated the advance of history and of thoughts from proposal to absolute opposite and thereupon to a blend. 
Hegel was the remainder of the colossal philosophical framework manufacturers of present day times. His work, endless supply of Immanuel Kant, Johann Gottlieb Fichte, and Friedrich Schelling, subsequently denotes the zenith of traditional German reasoning

The three sociological perspectives include the beginner’s mind, culture shock, and the sociological imagination

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