A is most likely right because a lot modern European countries get their borders from cultural and linguistic boundaries after old empires like Austria-Hungary, Russia, and Germany split up. Poland, Czechoslovakia, and Slovenia, just to name a few, were ethnic groups without countries before WW1.
B: isn't true, just look at eastern Europe in the 17th century, tons of ethnic groups living in one country. Even with more immigration to the Europe, most immigrants assimilate into European cultures.
C: Although geography can influence political borders to varying degrees, European nations don't strictly follow physical geographic features to my knowledge. There are a lot of borders based off of rivers you can see have stayed the same despite the rivers moving (Serbia and Croatia's border is a prime example)
D: I don't know what 'define' means in this context, but if it means religion and geography are the main reasons Europe get's their borders is just flat out wrong. We already talked about geography, but religion doesn't effect European borders since most European countries are christians and are secular. The only example I can think off the top of my head of religion affecting borders is in Ireland when they separated the protestant north from the rest of the island which was catholic.
Hope this helped you out :)
Sorry can't help you, but you can look it up on google
Cubriendo aproximadamente el 20 por ciento de la superficie de la Tierra, el Océano Atlántico es la segunda cuenca oceánica más grande del mundo, siguiendo solo el Pacífico. Sin embargo, es solo un poco más grande que la mitad del tamaño del Océano Pacífico.
El Océano Atlántico se encuentra entre América del Norte y del Sur en el oeste y Europa y África en el este. Hacia el norte, el Atlántico se conecta con el Océano Ártico y hacia el Océano Austral hacia el sur.
Los científicos a menudo dividen el Atlántico en dos cuencas: el Atlántico Norte y el Atlántico Sur. El Atlántico Norte, donde las aguas se hunden después de ser enfriadas por las temperaturas árticas, es el comienzo del "transportador oceánico global", un patrón de circulación que ayuda a regular el clima de la Tierra.
El Océano Atlántico deriva su nombre del dios griego, Atlas.
A. the amount of time they spent building the wall
I think the answer is A, when I looked at the picture and did some research, I found that the wall is 70 miles long so it's pretty obvious that they spent a lot of time making it in ancient old times.
