Answer:
Mass and density
Explanation:
Density of an object is defined as its mass per unit volume. Mathematically, the relation is given by :

m = mass and V = volume
If we know the density of the Eraser and its mass, we can easily find its volume. Hence, the two tools are mass and density.
I had to get the Bible to see this.
If you're asking in general then, the area has to have people who share common customs, belief and language.However, this might not entirely be true as there are some countries which have vast diversity and still portray nationalism.
Hope this helps!!
Tasrdom of Russia and various other dynasties added to the expansion of Russian in early sixteenth to seventeenth century.
Explanation:
Tsardom of Muscovy was the ancient Russian dynasty and the descendants of tsar emperors were famous in Russia. Russia grew physically by more than thirty thousand kilometers every year and many dynasties flourished and faced downfall from Rurik to Romanovs.
The reign of Peter is most famous as he gained popularity for the entire tsar kingdom of Russia. Tsar Emperors were parallel and gained much strength and dignity equal to the Byzantine emperors. Russia expanded its territory by annexing Siberia and its empire bordered up to central Asia.
Answer:
c. so people can to have their rights protected.