What would be a good motto or saying for specialization?

produce in bulk and purchase from neighboring countries.

produce more in the winter to maximize profit.

invest in gold to bring more money to the economy.

produce what you do best, trade for the rest.

Produce  what you best, trade for the rest.

Explanation:

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

d) a week

because the land run of 1889, although not without precedent in the history of the west, further, their men were aboard the first trains, ready to jump off and begin staking their claims. oklahoma city, edmond, and guthrie were all so affected.