Whenever the abbreviations in a timeline are the SAME, you should . Whenever the abbreviations in a timeline are DIFFERENT, you should .

AD and CE numbers always read , like the numbers in a number line.

BC and BCE numbers always read , like the numbers in a number line.

FAST PLEAS I HAVE NO TIME LEFT, IM ALREADY OVERDUE

by 1880, germany had more rail lines than great britain and russia.

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.

a causal relation between two events exists if the occurrence of the first causes the other. the first event is called the cause and the second event is called the effect. a correlation between two variables does not imply causation.

explanation: