I think it might be d but please let me know if it is right
I think you need to put this into science
Wartime Conservation
<span>During WWII workers would carpool to work or ride bicycles to save gasoline and rubber. People participated in nationwide drives to collect scrap iron, tin cans, newspaper, rags, and even cooking grease to recycle and use in war production.
Wartime Rationing
</span><span>Taking items that are in short supply and distributing them according to a system. For instance, during World War II, gas, sugar, and butter were a few of the items rationed in the United States.</span>
Jim Crow laws were black codes targeted by any non-white class. They placed legal limitations on things such as voting, working, and even recreational events were limited to any non-white person.
The final years of the Yuan dynasty were marked by struggle, famine, and bitterness among the populace, with Kublai Khan’s successors losing all influence on other Mongol lands across Asia.
