Round 2394 to the nearest tens​

30

Explanation:

because the number after 23 is greater than 5 .

2390

Explanation:

Since they are asking for the nearest tens, you should focus on the ones. If it is 5 and above, it rounds up to the next tens. If it is 4 and below, it rounds to the least nearest ones of the tens (I don't really know how to explain the round down)

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.

the committees of correspondence were the american colonies’ means for maintaining communication lines in the years before the revolutionary war. in 1764, boston formed the earliest committee of correspondence to encourage opposition to britain’s stiffening of customs enforcement and prohibition of american paper money. the following year, new york formed a similar committee to keep the other colonies notified of its actions in resisting the stamp act. in 1773, the virginia house of burgesses proposed that each colonial legislature appoint a committee for intercolonial correspondence. the exchanges that followed built solidarity during the turbulent times and bring about the formation of the first continental congress in 1774.