Compounds that have the same molecular formula but different chemical structures are called isomers. Remember isomerism is a property between a pair (or more) of molecules, i.e. a molecule is an isomer of another molecule. A similar relationship is that of brother or sister...
Many Americans are up in arms. But in fact, keeping out desperate souls seeking entry into America has deep roots. On this day 100 years ago, the United States passed the strictest immigration law of its time: the Immigration Act of 1917. The law restricted the immigration of undesirables, including many people from the Middle East and Asia, through increased taxes, tests and outright bans.
Introduction. The Immigration and Naturalization Act of 1965, also known as the Hart-Celler Act, abolished an earlier quota system based on national origin and established a new immigration policy based on reuniting immigrant families and attracting skilled labor to the United States.ll told, in the three decades following passage of the Immigration and Naturalization Act of 1965, more than 18 million legal immigrants entered the United States, more than three times the number admitted over the preceding 30 years.