Why was the statement "in god we trust” chosen as a national motto?

In God We Trust was added to the Latin saying E pluribus unum ("Out of many") in 1956 through a declaration by Congress.

The background to this decision was the Cold War and an effort to underscore the unity of the American people against the "godless communists". The declaration was initiated by the Dixiecrat and Congress member Charles E. Bennett, a member of the inner leadership circle of the anti-communist Christian fundamentalist network International Christian Leadership (ICL), which strives for a nation based on Christian principles.

it is the code of hammurabi

a peace conference held after the surrender of japan

an international conference held near the end of world war ii

a meeting of the victorious nations after the defeat of germany

a summit meeting between the united states and the soviet union