Historical clue formulations

• Split in two — 2021-09-06
• Split, in a way — 2021-05-14
• Cut in two — 2013-07-08
• Split — 2011-12-18
• Downsize, in a way — 2011-12-02
• Split, in a way — 2011-10-07
• Bisect — 2004-05-11
• Bisect — 1999-01-03
• Bisect — 1998-04-07