What new institution in europe replaced the roman system of governance?

Soon-yi's house has a hexagonal window made up of six identical equilateral triangles as pictured below.

Humans during the paleolithic era used fire for each of the following purposes except a. for cooking meat b. for use as a weapon c. for heat and warmth d. for treating animal hides select the best answer from the choices provided

During the era of european expansion, what was the biggest reason for spain’s push for exploration?