Who made necklaces in the 18th century?

It is probable that prehistorichumans thought of decorating the body before they thought of making use of anything that could suggest clothing. Before precious metals were discovered, people who lived along the seashore decorated themselves with a great variety of shells, fishbones, fish teeth, and coloured pebbles.

the california missions began in the late 18th century as an effort to convert native americans to catholicism and expand european territory. there were 21 missions in all, lasting from 1769 until about 1833.   the missions were built by the spanish starting in 1769 in order to “colonize” the territory of alta california. so the missions were important because they were the means of settling california. it also wanted to keep other european countries out of alta california. building settlements along the coast would them meet these goals. missionaries wanted to convert the indians to the roman catholic faith. california indians did much of the work to build missions.

c is the correct answer for this question.