overall, relationship, ruling, governing
統 centers on bringing things together into a unified whole: overseeing, governing, or ruling, and the relationships that connect parts into an overall system.
統 combines 糸 (thread) with 充, which likely contributes the sound and the idea of filling or completing. The thread suggests binding separate strands into one unified whole, giving the sense of governing or bringing together.
Thread 糸 on the left and 充 (fill) on the right: imagine using thread to tie many things together, filling the space with a single connected system. That is governing or ruling over an overall relationship.
For トウ, picture a ruler tying all the threads together while wearing a tall top hat: top hat -> トウ, and the ruler governs the whole.
president (of a country)
tradition; convention
unity; consolidation; uniformity; unification; compatible
statistics
integration; unification; unity; combination; consolidation; synthesis
rule; reign; government; governing
system
regulation; control
supreme ruler; generalissimo
legitimate; orthodox; traditional
lineage; pedigree; family line; birth
unification; bringing together; generalization
command; lead; generalship; leadership
Unification Church (new religious movement); Family Federation for World Peace and Unification
to rule over; to govern; to command; to control
reorganization (e.g. of a company); reorganisation; consolidation; scrap-and-build
the imperial line
supreme command; high command
general staff headquarters
lineage; line; unification; all (of you)