During the height of muslim power, inventions included
a) the astrolabe.
b) mathematics.
c) the thermometer
d) herbal medicine.

During the height of muslim power, inventions included : b. mathematics The proof of this is the existence of pyramid. There is no way to build that without a strong understanding of Geometry, which is a very strong proof that mathematics were invented during that period

Possess private property.

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.