When a relationship has lasted for a longer period of time than 3 years, there is a sign of trust and loyalty between that couple. The couple is calm about there relationship because they are glued to each other emotionally.
Hope I could help! :)
two advantage of atmospheric pressure are:
it is used in the to inject medicine in patient body atmospheric pressure is applied on syringe
it is also used to pump air in wheels of bicycle as atmospheric pressure is applied
From what I remember I think it would be Paul Revere
They began to rely on production of crops (agriculture) rather than the hunting-and-gathering lifestyle. I hope I helped!