They used bronze, rocks, copper and additional metal.
It is the two-party system that is most common in the English-speaking countries of the world. These party system arose in the west and were both loved and hated by many early Americans.
Railroads provided a beneficial factor toward the rapid growth in cities and especially significantly improved its industrialization. This is my first time answering a question.
I believe you mean the nuclear family? If this is the case, it is two heterosexual parents (male and female) with one or more kids. If you meant the unclear family this would be the family that always does weird things and never makes scene.