When and why the number of electoral votes of a state have changed?

The number of electoral votes can constantly change. This is because the number of votes a state gets is the number of representatives and senators in congress. Since the number of representatives is based on the population it can change. Every ten years the US takes a census to see the population of each state, then based of the results decides how many representatives every state gets, this then changes the number of votes every state gets. For example, in 1960 there were only 537 electoral colleges in the US, currently, there are 538.

you aint got nothin on my lil weenies

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.