1. The conflict began after Athens and Eretria gave assistance to the Ionians in their rebellion against Persia and its ruler, Darius.
Descriptive investigations involve collecting data about a system, but not making tests or experiments.
Making tests belongs to experimental investigations.
Descriptive investigations aim to draw conclusions from observations of the fenomena, while experimental investigations design tests that let the researcher to compare results on different conditions with a control situation.
There is also the so called comparative investigations which collect data from under different conditions but do not include the control situtation.
The shutdown of the United States government ultimately means that important government work is either not being done, done with resentment, or done by people that are not being paid.
While there are those that think the United States government is too large, a shuddering of the Government ultimately means food that is less safer, environment that is more polluted, and a population that is more in danger.
Steamboats. Steamboats positively effected the world because they made the transportation of goods more efficient and economical. Travel time was cut in half and were a compliment of the railroads, both for commercial and passenger transportation. Steamboats were independent on the wind speed and direction.
The right to bear arms falls under the second amendment of the constitution
