What abiotic
factors can you identify in
this ecosystem?

Answer quickly! correct answers only! how did an agricultural surplus relate to expanded trade during the high middle ages? a)trade increased because surplus crops could be traded. b)trade decreased because surplus crops were needed to feed local populations. c)trade decreased because surplus crops led to an oversupply of grains that could not be sold. d)trade increased regionally but decreased globally because trade networks had shrunk.

Which of the following was discovered in the piedmont region of north carolina in 1799?

How would having more railroad tracks be advantageous during a war