Which of the following developments led to an increase in european exploration

It should be Improved seafaring technologies led to an increase in European exploration.

Explanation:

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.