Why did johnson back the war in vietnam? he wanted to prevent a communist takeover of southeast asia. he wanted the united states to control all of southeast asia. he wanted to prevent an invasion of cambodia by north vietnam.

He wanted to prevent a Communist takeover of Southeast Asia.

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.

where's the