What are some questions you should ask yourself when judging the quality of a primary source?

The chart shows data on the construction of dreadnoughts, or armed battleships, by 1914. (look at chart provided) a logical conclusion that can be drawn from this chart is that britain and germany were a.)engaged in an arms race. b.)looking for ways to cooperate. c.)hoping not to fight on land. d.)the strongest nations on the earth.

Why do many scientists suppose the land bridge theory of migration?

He table below shows the number of immigrants to the united states from different regions of europe between 1871 and 1910