Who was the first ever president

Don’t mind the already marked answer but taking it now

This map shows north korea and south korea today. how does this map reflect the impact of the korean war?

Why were presidents andrew jackson and martin van buren unwilling to annex texas? a. they did not want texas to be admitted to the union as a slave state. b. they feared that the annexation of texas as a slave state would lead to political problems within the union. c. they thought that texas was too large to be admitted to the union as one state. d. they did not believe in the idea of manifest destiny.