The 13th colonies were afraid the British Navy were surrounding them.
The U.S. justified its involvement in the Vietnam War by stating that they were fighting against communism. At the time, the Soviet Union was seen as a huge threat and there was a rivalry between the two nations.
Explanation:
Some of the differences between Olmec, Maya, Inca are given below;
Olmec didn't make larger cities like the Maya
The Maya rules lesser than the Olmecs
Incas lived in the mountians and this made them hard working people who could face tough environments. They were involved in agriculture
Incas had some strong alliances that helped them to rule
Mayas were more of Kings ruling period and culture
Incas lived in highlands whereas the Olmec lived in lowlands, total opposite geography and land structure.
Olmec lost their rule one by one whereas the Inca lost the rule in one go
I believe it would be Communist Countries and fascist countries