Which statement best describes humanism? It is a way of thinking centered on religious beliefs.
It is a renewed interest in the study of medicine and biology.
O It is a painting technique in which humans are portrayed realistically.
O It is a way of thinking centered on human needs, interests, and values.

Rich volcanic soil makes the Po and Tiber river valleys ideally suited for agriculture. Historian Mike Anderson notes that volcanic ash made the soil near Rome some of the best in all of Europe. The surplus also helped Rome to establish trade ties with other Mediterranean powers, enhancing the city's economic might.