Gorbachev pursued glasnost and perestroika reforms in part because a. the war in afghanistan had drained the nation’s resources. b. the soviet union had already demonstrated superior nuclear capability. c. food surpluses and production increases created stable economic conditions. d. russian revolutionaries staged a coup to overthrow the communist government.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

southern north america: yucatán peninsula in southern mexico extending into northern guatemala, and northern belize. these moist forests on the yucatán peninsula of south-eastern mexico are characterized by a tropical humid climate with little topographic relief.

explanation: