GE recognized that it could only sustain its competitive advantage for a limited time as competitors attempted to outmaneuver them. What was the model that Welch applied to help solve this problem?

Can someone me with these 2 questions? and tell me why it is the correct answer?

Xplain one benefit and one risk of making voting mandatory in the united states.

The map above shows the expansion of the greek empire. which statement best describes the greeks during the 4th century bc? a. greek expansion was stopped by the persian empire. b. the greek empire controlled parts of africa, europe, and asia. c. the greeks were threatened by barbarian tribes in europe. d. greece did not have friendly relations with ancient egypt.