Why did President James K. Polk support the U.S. acquisition of both Texas and the entire Oregon Territory?

(1 point)
Responses

He believed in Manifest Destiny.
He believed in Manifest Destiny.

He wanted to provoke a war with Mexico.
He wanted to provoke a war with Mexico.

He wanted to drive Great Britain out of North America.
He wanted to drive Great Britain out of North America.

He needed to win the support of southern slaveholders.