Why did the United states fight a major war in southeast asia?

When you cross a time zone going east what happens to the time

Dose local topography and sea surface temp contribute to differences in climate between baeious localities

Religious conflict in northern ireland started with a) cultural differences resulting from viking invasions around 800 b) england’s split from the catholic church in the 1500s c) rebellions in ireland between 1916 and 1921 d) the norman invasion of england in 1066