It would be the development in agricultural knowledge/technology
Development in agriculture enable hunter/gatherer society to shift their behavior. Before this, they had to keep moving from one place to another in order to seek food to live.
After the development in agricultural knowledge/technology, the society now can stay in one exact place for a long period of time and relied on agricultural product as their main source food.
After living in one same place for a long time, the needs to build things to accommodate their living start to arise. They start to built several things and repeat the process every year. In the end, large cities were developed from the initially small hunter/gatherer society.
Lots of trade including spices, and new technology/weapons.
I’m not sure if that’s what you want but that’s the basics of what comes and goes from countries.
Apollo 11, in July 1969, climaxed the step-by-step procedure with a lunar landing; on July 20 astronaut Neil Armstrong and then Edwin (“Buzz”) Aldrin became the first humans to set foot on the Moon's surface.
Answer:
it's called Rio Grande del Norte (it's also the 5th longest river in North America and ranking 20th for the longest river in the world)
hope that helps!!
The Good Neighbor policy was a foreign policy that US President Franklin Roosevelt adopted regarding the affairs of Latin America. Basically it was a non interference and non intervention principle that the US adopted regarding the political and economical affairs to Latin America to show that they were being a "good neighbor." The Good Neighbor allowed the US to build strong ties to several countries in Latin America, however it was essentially dissolves when the Cold War began in 1945 and the US felt a stronger need to protect its close allies.