The Great Compromise was one of the agreements made during the Constitutional Convention of 1787. States that had a greater population argued that they should have a greater representation in Congress. Smaller states demanded equal representation, as they argued that unequal representation would lead to an unfair dominance of the larger states over the country's affairs.
Roger Sherman ultimately came with the solution of a Congress with two houses. The House of Representatives would have representation proportional to the population in each state. However, the Senate would have 2 representatives per state. Regardless of their population.
Proximity means how close something is; closeness.
There were lots of uncontrollable strikes in Petrograd, ones which he tried to send out his army to to save. However, his soldiers then refused to let fire on the protesters. He then weakened a huge amount and lost great chunks of his supporters. This meant he had to abdicate