Differentiate between pre vist and field study​

In 1870, which path would settlers moving west from el paso to los angeles have followed? a) old spanish trail b) gila trail c) california trail d) oregon trail

The district of columbia could be eliminated completely if a majority of congress voted in favor of the action. a. true b. false

How would i answer this in a exam. orange - sea temperature is over 27 red arrows - tropical storm routes