In feudalism a knight must a. protect serfs from unscrupulous vassals b. pay fiefs to a vassal c. be ready to defend his vassal's territory as part of a "standing army" d. be responsible to his lord for the agricultural output of the serfs under his control

Hurry ! between 1900 and 2010, how did the world’s population change? a. it increased from about 1.5 billion to almost 7 billion. b. it decreased from about 7 billion to about 1 billion. c. it increased from about 5 billion to about 7 billion. d. it decreased from about 7 billion to about 1.5 billion.

What is the role of buyer & seller in the marketplace

The zealots and sages, like ben zaccai, opposed the romans in different ways. describe the differences.