Answer:
Trans
Explanation:
The things that help me is to look for words with the prefix trans. Such as transport which means "To take or carry from one place to another..."
Another word transcontinental which means "across the country"
Both words have the meaning across in it (in transport I did not use the word across but it still apply's) Try using this method in your next test it should help.
Hope I helped. If I helped please click a heart.