B. in the late eighteenth century
Answer:
Post-classical history (also called the post-antiquity era, post-ancient era, or pre-modern era) is a periodization commonly used by the school of "world history" instead of Middle Ages (Medieval), which is roughly synonymous.[1] The period runs from about AD 500 to 1450 though there may be regional differences and debates. The era was globally characterized by the expansion of civilizations geographically and development of networks of trade between civilizations
Archimedies discovered water displacement when he took a bath to help the king of egypt to see if his crown has real gold when he took a dip the water flowed over the top and he discovered water displacement
<span>It has been from Latin America that there has been a dramatic increase in immigration to the United States since 1965. This has been in part due to better job opportunities in the US. </span>
Cliff dwellers who disappeared mysteriously were Anasazi Indians