Conversation so far:
who becomes president if the president and vice president are dead
If the Vice President is unable to serve, the next person in the line of succession acts as President.
who is the next person in line of succession after the vice president
The second in line, after the Vice President was the leader of the Senate.
who is the next person in line of succession after the senate
The next in line was the Speaker of the House of Representatives.

Question: when were these laws created
Self-contained rewrite: when were the laws of succession for presidency created