のことだから => because; since ~ N2
ことから => from the fact that ~ N2
ところから => because; from the fact that N3
Base, base
からこそ/~ばこそ/こそ => precisely because ~ N2
ことか => how…!; what…! N2
Exclamatory
ことから => Displays reason A for effect B N2
Reason, Result, Response
だからこそ => precisely because ~ N3
Cause, reason
どうせ (のこと) だから => Because eventually have to ... N3
Invite and advise
...とかいうことだ => I heard... N3
Heard
ここ/そこ/あそこ/こちら/そちら/あちら => here / there / over there N5
Spatial relations
ということなら => If he says so~ N3
Demonstrate by example
ことだから => Shows a typical trait or characteristic of A N2
Information, Report