Knights were given land in return for a. their freedom b. cash and goods c. working the land d. military allegiance

The large connected urbane area from boston to washington, d.c. is often referred to as

Political boundaries are determined by the political party in control at the time. true or false

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks