What challenges did the byzantine empire face from foreign forces?

avars and sassanids–

arabs–

bulgars–

Ineed a summary over the 6th amendment

Where were the trials to review evidence in cases against high-ranking nazi officials accused of war crimes held?

The venn diagram below shows some services provided by state and local governments. the answer choices are (1) - creating a police force, (2) - regulating taxicabs, (3) - regulating savings banks, (4) - issuing driver licenses.