On a community level (using the example of northern california) what are some practical implications of gis

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

During the industrial revolution in europe, were recruited to locate criminals. sheriffs police bobbies thief catchers

Coal combustion produces which of the following waste products? i. tar ii. methane iii. electricity i only ii only i and ii ii and iii i, ii, and iii