What happened to Washington when Oregon became a state?

Question

It expanded.
It got smaller.
It became a state, too.
It became part of Oregon.

Answer 1

When Oregon became a state on February 14, 1859, Washington did not experience a significant change in its territorial boundaries, as it was already a designated territory. Therefore, the correct answer would be that Washington expanded in terms of its future developments and population growth, but it did not physically change in size or become part of Oregon. Washington was eventually admitted as a state on November 11, 1889, after Oregon.