Long, long ago all of the continents were connected into a supercontinent called Pangea. Now, there was a land bridge, presumably, that connected what is now Alaska to Asia (Russia).
<span>The Great Wall of China should be preserved because it is a historic wonder that is known throughout the world that many tourists visit. In addition, it is also one of the few man made objects that can be seen from orbiting the Earth.</span>
The answer to the question is "FILIBUSTER".
We are being asked what is the tactic did senators use to try a blocked passage civil rights act of 1964 for more than two months and the answer is the "Filibuster tactic" on which they delay the votes.
Europeans tended to have a more industrialized and wealthy populous unlike China where most of the population was poor.