Why did many americans turn against the war they had once supported between 1964 and 1969?

a: it had cost more money and more lives each year without any sign of victory.

b: president johnson had refused to run for re-election because the war was such a failure.

c: walter cronkite had praised the war in an editorial on the nightly network news.

d: the counterculture had convinced them that the war was illegitimate and unwinnable.