How did the tet offensive mostly affect the course of the vietnam war?

it greatly damaged american popular support for the conflict.

it gave the vietcong control of major urban centers.

it ended u.s.-north vietnam peace talks that had begun shortly before.

it forced the united states to immediately withdraw its troops.

The right answer for the question that is being asked and shown above is that: "It ended U.S.-North Vietnam peace talks that had begun shortly before." the Tet Offensive mostly affect the course of the Vietnam War is that It ended U.S.-North Vietnam peace talks that had begun shortly before.

It took only a more than a year around 15 month since it spread from crimea   peninsula to middle east and europe