Why did leaders of the Muslim Empire want to conquer the Byzantine and Sassanid empires?

1.who controls fascism government? 2.who controls communism gov? 3. how do they stay in power

What were two reasons for world war ii? -separation of nationalities -territorial disputes over lost territories -settlement in the previous war suited the monarchs

Considering the case of the two health clinics above, why do you think that trouble was brewing? there was serious competition for tech jobs at the downtown clinic. the new technology at the uptown clinic was too difficult for the staff to understand. the doctors pitted the staff of one clinic against the staff at other clinic. the staff at the downtown clinic saw that their colleagues at the uptown clinic were treated better and had more opportunity.