Why is Hagia Sophia important to the Greek Orthodox Church? Why is the Hagia Sophia important to the Byzantine Empire?

Why do you think it was important for Constantinople to have a wall?

Do you think the wall was the most important creation that the Byzantine Empire had?
Explain

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.  

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress