Who is the president of Saudi Arabia?

Mohammed bin Salman

Explanation:

Mohammed bin Salman took the leadership in the restructuring of Saudi Arabia's economy, which he officially announced in April 2016 when he introduced Vision 2030, the country's strategic orientation for the next 15 years.

answer; taking up arms to defend the nation;

the foundation of greek city-states: following the fall of the mycenaean civilization in the 10th century bc, the area surrounding the empire went through its own mini dark ages. answer and explanation