Originated in Spain back in the 12th Century or so but is now widely found around the work especially in Australia and New Zealand.
Merino is some of the finest wool around, tending to be very soft and fluffy and having “memory”. By memory I mean, if you stretch it tends to want to return to the original shape. Great for those project that are fitted or shaped, like fitted sweaters or socks. But Don’t let that limit you, it’s your project, use what you want and be YOU!