How did traders, trappers, and mountain men affect westward movement? a) they spread tales of bountiful natural resources and friendly native americans in the american west b) they created trapping and trading trails that eventually became important travel routes c) they sent-back high-grade leather and lumber that was used to make caravans that could survive the trip west d) they created detailed maps of the west showing the best routes for pioneers to create wagon trails

b) They created trapping and trading trails that eventually became important travel routes

Explanation:

Traders, trappers and mountain men had routes that they had to transit to move from east to west, this later helped to create routes that were used by regular people to move west to populate the western lands, since they already had routes and places where it was safe and secure to transit.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.