The correct answer should be an Embargo. Embargo's can come from more sides, either as sanctions, or as a country deciding not to participate anywhere
They would be 60 years old because you would 1968-12=1956 than you 2016-1956= 60
The Delta is formed at the western edge of the Central
Valley by the confluence of the Sacramento and San Joaquin rivers. It was
created since the last day of the Ice Age. The role of the Delta in the two
major water systems is to deliver water
for irrigation in the San Joaquin Valley and municipal water supply for
southern California.