The modern form of the standard Spanish language (Castilian). Was not in use until the 16th Century. In it's earliest documented form, up until the 15th century it was customarily called 'Old Spanish.'
The Kingdom of Spain, as a monarchy, was formed in 1812. In 1978, however, a democratic constitution was introduced, and it is the framework of the Spanish government today.
There wasn't a particular year. Like most, if not all, languages, it evolved over centuries - a mix of Iberian, Latin, Moorish, etc., slowly becoming recognisable as what it is at present.
Spanish peseta was created in 1869.
Historically, English is considered to have developed from older Germanic languages while Spanish evolved from Latin. Latin, the predecessor to Spanish, can be traced back to around 1000 BC, while Old English, the predecessor to modern English, emerged around the 5th century AD.
Spanish Wikipedia was created in 2001.
The Spanish Labyrinth was created in 1943.
Spanish Guinea was created in 1926.
Spanish moss was created in 1762.
Spanish Affair was created in 1957.
The Spanish Journal was created in 1999.
Going Spanish was created in 1934.
The Spanish House was created in 1928.
Spanish fly was created in 1758.
The Spanish Gardener was created in 1950.
Spanish Key was created in 1969.