One very famous, perhaps the most famous way was through improvised vaccination. Specifically, George Washington ordered his healthy men to be injected with substance taken from the wounds of the sick men during a smallpox infection.
A risk was that those men would get sick just like the the sick men did, but the the potential reward would be that they would get sick in a controlled way and that they would be able to fight this disease.
During the late 1800s in Poland and Russia, anti-Semitism took the form of violent attacks called Pogrom.
These attacks forced many Jews to flee to western Europe. Nonetheless, some Jews continued to survive in eastern Europe in small villages called Shtetlekh.
Pogrom is a Russian word which means to wreak havoc or to demolish violently. Historically, the term refers to violent attacks by local non-Jewish populations on Jews in the Russian Empire and in other countries.
Shtetlekh were small towns with large Jewish populations, which existed in Central and Eastern Europe before the Holocaust.
The EEC was created in 1957 by the Treaty of Rome, which was signed by Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany. The United Kingdom, Denmark, and Ireland joined in 1973, followed by Greece in 1981 and Portugal and Spain in 1986.