Answer:
European family structure in Eastern Europe was stronger than Northwestern Europe.
Explanation:
European family structure in the 18th century was unique in its period. Industrialization changes the society and life of people. In the Eastern European family, grandparents were much more respected and had the opportunity to form a bond with their grandchildren than did Northwestern European. A society based on the values of the old traditions in Eastern Europe where Northwestern Europe believed in the nuclear family as they were heading towards capitalism.
An important scientist at the time, besides, those who were mentioned was Copernicus - A.
Spartacus was just a slave general in the Roman republic.
Rousseau was a philosopher.
Plato was a philosopher as well.
The correct answer for that reason is Copernicus, he was an astronomer and a major figure at the time.