About how many years ago was the bering land bridge said to have formed? answer 225 million 225,000 250,000 22 million

The correct answer is : 22 million

Explanation:  The bridge ran from the tip of Siberia, western Alaska and most of the Bering Sea. The bridge was formed in two periods. It was useful for plants and animals to migrate and probably also human beings, it is possible that tribes of Asia had crossed the bridge.

i think it is the byzantine empire

the correct answer is "c: merchants" and "e. soldiers".

the song dynasty was known as the first government in the world to introduce paper currency. it was also the first chinese government which established a permanent standing navy. finally, the first compass was introduced during this period of government.

all of these innovations heavily affected commerce in a positive way. printed money dynamize commerce within the borders of the empire due to an easier way to quantify value during the trade. the introduction of the compass trade routes to be faster. finally, the introduction of a standing navy regulate trade routes.

regarding military affairs, gunpowder was created during this period. this was a tremendous improvement that was widely utilized by the military in order to innovate in the manufacturing of weapons.