What is most often given a value of zero to describe an object's position on a stright line

The whigs selected william henry harrison to run against president van buren. in the campaign, the whigs compared harrison to , who grew up on the frontier in a. this became a of the 1840 campaign, even though harrison was a wealthy man. harrison was also a war . the whigs' campaign slogan used harrison's victory at , a battle in the war of 1812, and , his vice presidential running mate. in the campaign, the whigs blamed for the depression that followed the panic of 1837. many voters participated in the election, and became the first whig president. when harrison died, tyler became president. tyler had once been a. he didn't always agree with the of his own party, and the party expelled him

Many asian immigrants came to the united states in the 1960s and 1970s because of push factors, including the possibility of religious freedom. economic opportunities. the chance of family reunions. o poverty and chaos.

In 1956, people in demanded that soviet troops to be removed as the part of a call for democratic reforms