Steamboats. Steamboats positively effected the world because they made the transportation of goods more efficient and economical. Travel time was cut in half and were a compliment of the railroads, both for commercial and passenger transportation. Steamboats were independent on the wind speed and direction.
Cultural diffusion. Cultural diffusion is how all religion spreads.
I would say that it is the third one.
Answer:
by using context clues Hints that appear in a text that help readers discover the meaning of an unknown word, usually based on how it is used in a sentence or paragraph.
Explanation:
Context clues will expand your vocabulary. by helping you guess the meaning of a word based on how it is used in a sentence.
I pretty sure it's isthmus
