<span>Prior to the standard gauge track, railroad travel was much more arduous and painstaking. There were originally several types of gauges used on a railway track. This caused long train trips to require multiple stops in order to change train cars. With the standard gauge track on trains in the 1800s, multiple changes were no longer necessary and so the trips were shorter.</span>
Heritability is the proportion of this total variation between individuals in a given population due to genetic variation
Answer:
Political action committees (PACs) provide financial support to political campaigns and are regulated by the Federal Election Commission.
In May 1915, the Lusitania was sank by a German U-Boat. About 1200 lives were lost, many hundreds of whom were American. Naturally, the Americans became angry that the Germans sank a ship full of passengers without provocation
