By 4000 B. C.E., the staple food of Mesoamerica was O potato.
O fish.
O squash.
O beans.
O maize.

Prior to the 1948 presidential campaign, truman won back the support of labor unions by highlighting his opposition to the taft-hartley act. supporting the passage of the national security act. pushing for equal rights for african american citizens. opposing the strikes of railroad and mine workers.