The Parade marched for the first time on March 17, 1762 - fourteen Years before the Declaration of Independence was adopted and today it is the largest Parade in the World.
Well the first St. Patricks day parade was actually held in New York City in 1762. For the second question one million people took part in the St. Patricks day festival in Dublin. Hope this helps
Macy's held the first Thanksgiving day parade in New York City on November 27, 1924.
There is no NYC (Christmas Parade) per se, it should be noted the last Float in the Thanksgiving Day Parade, is traditionaly Saint Nick in his sleigh with reindeer, heralding in the Yuletide season! No Christmas Parade, however.
New York City is the largest. Chicago and Boston are close seconds. The shortest however is held in Conklin, Michigan.
New York City, or Chicago
New York City
New York City
According to History.com, it was in 1762, but it was organized by Irish soldiers serving in the British army, and it was the first official, organized St. Paddy's Day parade in the world. (Boston had the first organized celebration in 1737 but no organized, official parade, apparently)
In the US it is New York City
new York city
Becasue it was during the first Iraq War
Macy's thanksgiving parade