I believe it's A.) A means of communication. It depends on what you're using it for in a sentence. Hope this helps! :))
National border is the type of border among the following choices given in the question that would likely have the most protection. The correct option among all the options that are given in the question is the third option or the penultimate option. I hope the answer helps you.
Answer:
Nangangahulugan ang pagsasaka na hindi kailangang maglakbay ang mga tao upang makahanap ng pagkain. Sa halip, nagsimula silang manirahan sa mga nakatira na mga pamayanan, at nagtanim ng mga pananim o nagtataas ng mga hayop sa kalapit na lupain. Nagtayo sila ng mas malakas, mas permanenteng mga bahay at pinalibutan ng pader ang kanilang mga pamayanan upang maprotektahan ang kanilang sarili.
Explanation:)
The dispute was settled when they split the line in present-day Brazil, in which Portugal was given the eastern part of Brazil, while Spain got the Western part of South America in ~38 degree parallel (1493) to the 46 degree parallel (1494)
hope this helps