What happened to the roman empire under constantine in 313 ad?

How did the house of wisdom contribute to social developments during the golden age

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

What type of sentence has at least one independent and one dependent clause