Jefferson was powerless at first to dismiss the federal judges because they were appointed for life, but he did replace most of the marshals and other court officers with Republican.
Answer:
The world is bad. It's not getting better. All we have is hope. Hope for a better future. Pollution is getting worst. More animals are becoming extinct. More health problems. More injustice. More violence. The world is promoting things desirable for the eyes but not always good things. Harming innocent people. Racism. Millions die every day. Hope I helped..
1) Muhammad's successors help expand the Arab empire after his death by suppressing tribal, political and religious uprisings. They united the Muslim world. They defeated and conquered other territories.
2) There was tension over who should rule the empire after the death of Muhammad because he did not have a son and never named a successor.
The first three are correct. I'm not sure about the fourth one.