Which state is known as "The Pine Tree State"?

Which state is known as "The Tar Heel State"? Which state is known as "The Palmetto State"? Which state is known as "The Green Mountain State"? Which state is known as "The Granite State"? Which state is known as "The Bay State"? Which state is known as "The Ocean State"? Which state is known as "The First State"? Which state is known as "The Constitution State"?