Please help me out !!

1. By definition, the French court ballet was a composite art form, a combination of equal elements - poetry, dance, music and painting. The genre came into existence at the end of the 16th century.

3. Ballet and opera began in the 17th century, with the elaborate spectacles devised at European courts. These were flamboyant entertainments used to celebrate marriages or show off the wealth and power of the ruler.

I don't know about 2 sorry