Name The Year: Qatar regains complete independence from Britain.?

Questions

what was the first u.s state to seccede from the union on december 20, 1860?

who signed the declaration of independence?

what award did washington create in 1782 as a decoration to recognize merit in enlisted men and non-commissioned officers?

the 'purple heart' medal was created in 1668, 1701 or 1782?

who created the 'purple heart' decoration in 1782?