The Roman Catholic Church, Anglicans, Lutherans, Orthodox Christians, Jains, Taoists, Hindus, and Buddhists are some of the churches that have nuns. They have chosen a cloistered lifestyle and are dedicated to their beliefs.
Catholic
The nuns would develop them and help them grow.
No. Monasteries are where monks and/or nuns live. Churches are where the congregation worships. However, a monastery usually includes a chapel or a church as part of the complex.
Monasteries are governed by the rules of the community. Both nuns and monks are known to live in monasteries and they also have chapels or churches in them.
The scrub uniform for nurses first came from nuns. Nuns were normally the main caregivers in past history, and because most churches are based off the catholic religion, they brought over their uniform.
Some churches have enough money to purchase it from outside. Many of those purchase it from certain convents where nuns make the wafers. Other churches with less funding have volunteers prepare unleavened bread for communion.
Unlike the Roman Catholic or most Orthodox Churches, Protestant churches allow their ministers to marry. Therefore, within the Methodist Church, ministers are free to marry whom they like.
Medieval Churches were important as that is where the townspeople payed their taxes. It is also where townspeople went to pray and attend sermons. It was important to the Nuns, Monks priests etc. as that is where they held sermons and preached God.
The French revolution was extremely hostile to the Catholic Church. They guillotined priests, nuns, and sisters by the hundreds, desecrated Churches, and destroyed priceless relics.
Other nuns
Monks and nuns often served the community by becoming educators and teaching school. They also worked in hospitals as nurses or aids, led prayer services at churches or homes, and even made some products to sell.
You are a little confused. Catholic nuns are cloistered and do no work outside of their monastery. The women that you see that teach, nurse, work in parishes are Sisters (although they are commonly referred to as nuns, they are not). All nuns AND Sisters take a vow of poverty when they are fully professed and may not receive any salary. Any salary that their Order mayreceive is paid for by whatever institute they that work for: the hospital, the parish, the school, etc. There is no "Catholic Church" institute, only particular Churches which are individual Bishops and their dioceses.
Monks and nuns do the monks' and nuns' jobs now.