3) English. English used to be the second-most common language, but Spanish-speakers have increased much more rapidly over the past 15 years. Still, scholars have named English the worldâs âmost influential language,â due to the number of speakers (360 million) and the number of countries in which it is spoken.
1964 was the date on the last 90% silver coins. Silver coins were  actually made up through the early part of 1966 but the 1964 date  was used on all of those. 1965 was usedâ¦ on the clad coins that were  made in that year. So any dime, half dollar or quarter with a date  of 1964 is 90% silver.
The last silver certificates were $1 notes bearing the date and  series 1957 B. Despite the date, they were actually issued until  March 25, 1964 and bear the signature of Câ¦.