What was the authority granted to The Senate under the tsar?
The authority to serve as the supreme juducial and administrative body.
What did Alexander I go about doing for the colleges created by Peter the Great?
They were replaced with more modern and efficient ministries covering a range of political, social, and economic domains.
In what year did Alexander I establish the Council of State?
1810.
What was the purpose of establishing the Council of State in 1810?
It was meant to aid the tsar with the legislative governance of the state that was bounded by a strict set of procedural rules to emphasize the legality of the lawmaking process.