The three rules known for unifying Japan are Oda Nobunaga, Toyotomi Hideyoshi, and Tokugawa Ieyasu.
Answer:
I say The last option banned them from using chemical weapons, and
no submarines or aeroplanes, and only six battleships
The cornerstone was providing universal healthcare.
This was the cornerstone of his first term because it's the idea around which his entire campaign was developed. He, being a democrat, supported the idea of universal health care and tried to implement many new programs that would help people. The universal healthcare idea is still problematic however even to this day.