Does the combined sentence use a compound subject, compound verb, or compound object?

Based on the text and the map, which labeled location sends products to shihr? the travels of marco polo and study the map.

Which choice is a major detail from paragraph two? a) the great wall is a large network of several walls and towers. b) the great wall looks like a long wall snaking its way across china. c) the great wall was constructed over hundreds of years beginning in 221 b.c. d) the great wall construction encouraged several independent kingdoms to unite.

Choose the types of characters an author may choose to create