Which of these was a positive consequence of the panning and mining of gold during the California gold rush. A: many more settlers made the journey from the east to California
B: Mexico agreed to sell California to the United States without any conflict
C: American Indians were able to improve their lives with their share of the gold
D: American built a canal across Panama to make it easier to reach San Francisco

the atm that sounds like it should be the answer

the telephone is the answer

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.