<span>Since 1848, the Rio Grande has marked the boundary between Mexico and the United States. It affected domestic policy in that the river had been a cause for a discord between the US and Mexico and special policies were implemented for the area.</span>
Answer:
The Russian word "tsar" is derived from the Latin title for the Roman emperors, caesar.
It created tension between the colonies and Great Britain. Early in the American Revolution colonist considered this a grievance. I don't know if this answer helps, sorry if it doesn't. :)
