What is an example of bias in historical research? A.
interviewing multiple sources to confirm a single fact despite the fact being obviously true

B.
depending on sources to be reliable and valid based on contemporary opinions of that source

C.
judging the validity of sources based on the wealth, health, or social status of the source

D.
comparing primary and secondary sources to triangulate the facts about a single historical event

these the citzens and goverment come to terms some of the amendments gave the states more power then the goverment and some protocted americans rights

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: