How did China's policy toward the outside world at the beginning of the Ming dynasty differ from that at the end of the Ming Dynasty?

What kind os source would a historian use to get a firsthand account of a past event

What problem did the business leaders have with the roosevelt administration's policies? too much for tenant farmers not enough deficit spending too much deficit spending not enough for tenant farmers

Why was lee unable to escape from appomattox? he didnt not have the needed supplies grant had him surrounded davis had ordered him to surrender he was waiting for johnston to bring reinforcements