Why is there no graves of people before 1600?
Before then, they would pile bodies up until they rotted, basically. They never had a proper "burial", as one would call it, until it became proper in the 1600s.
Most of the time when people died in the civil war and no one claimed them they would be buried in pit graves or ditch graves about 53,000 pit graves or ditch graves were made for 120,000 soldiers but some of the officers who were claimed by wealthier families were preserved and shipped home for burial. this was one of the first wars in which this happened.
No. Graves disease can cause temporary infertility but women who have been treated for Graves' disease or Hashimoto's thyroiditis can become pregnant since normal fertility is restored after treatment. It is recommended that Graves' disease be treated with surgery or radioactive iodine before becoming pregnant because antithyroid medication can cross the placenta and cause thyroid problems for the baby. However it is recommended to wait six months after radioactive iodine treatment before becoming pregnant.