Technically, no. The District of Columbia had slavery until April 16, 1862, but it is a federal district, not a state.
no
Washington was not a state until 1889.
Missouri entered as a slave state. Slavery was abolished in Washington, D.C. The abolition of slavery in the district of Columbia
The border state of Maryland remained in the Union during the US Civil War and was a slave holding state. Washington DC is surrounded by Maryland and by the Potomac River.
Yes Washington State does receive sunshine.
No.
have*
Washington's official nickname is the "Evergreen State".
Oh, heck yeah!
Look at a map and figure it out who ever asked this question
Because of its Mountains and forest
None so far.